Get Instant Help From 5000+ Experts For
question

Writing: Get your essay and assignment written from scratch by PhD expert

Rewriting: Paraphrase or rewrite your friend's essay with similar meaning at reduced cost

Editing:Proofread your work by experts and improve grade at Lowest cost

And Improve Your Grades
myassignmenthelp.com
loader
Phone no. Missing!

Enter phone no. to receive critical updates and urgent messages !

Attach file

Error goes here

Files Missing!

Please upload all relevant files for quick & complete assistance.

Guaranteed Higher Grade!
Free Quote
wave

You have been contracted to design a central heating system for a bungalow in a location of your choice in the U.K.. This is to operate over the next 20 years. Select an appropriate system justifying your choice by taking into account capital/running costs, technical feasibility and any other relevant factor. The worksheet in subsequent pages has been included as a reference to facilitate your report.

You need to complete the tables in the worksheet and use the specifications/formulae to make your decision. Your report should reflect the following information.

  1. Review various methods/materials currently used to improve thermal performance in buildings.
  2. Review energy sources likely to be available in this period.
  3. Show sample calculations to justify your decision (all formulae required are in the worksheet)

Heat Exchange Formulae

Topic: Central heating system of Bungalow

The course of action of focal warming structure for the house on the prelude of liquid stream perspectives, for example, as material and direct confirmation and moreover warm exchanger graph begin .The house will be warmed utilizing a 42 kW hotter with a 20 ?C temperature refinement between the water river and outlet. This will utilized for masterminding warming structure on the start of Heat exchange edges (Cockroft, Cowie, Samuel, 2017).

 

The most comprehensively saw kind of Heat pump is the air-source warm pump, which exchanges warm between your home and the outside air. The present Heat pump can reduce your vitality use for warming by around half showed up distinctively in connection to electric affirmation warming, for example, radiators and baseboard radiators. High-reasonability warm pumps additionally dehumidify superior to anything standard focal ventilation systems, accomplishing less vitality utilize and the entire all the all the more cooling solace in summer months. Air-source warm pumps have been utilized for a long time in all parts of the United States, yet so far they have not been utilized as a bit of zones that master expanded conditions of subfreezing temperatures.

Heat exchanger is a constant flow adiabatic open framework in which two liquid s trade or exchange warm between them without losing or growing any glow from condition or incorporating. As indicated by constant stream vitality condition net change in enthalpy of Heat exchanger is zero. From thermodynamics we comprehend that glow move in any dependable weight process is equivalent to change in enthalpy of the liquid. In addition we expect that the largeness of the hot and cold liquids stays unflinching as they go through the glow exchanger. Solidifying in excess of two fixations it can be considered that the rate of Heat exchange among hot and chilly liquid in any glow exchanger is equivalent to the rate of enthalpy change of both of the liquids (Dellwig & Lipinski, 2017). The prosperity measure is that don't utilize the relationship of condition for enrolling enthalpy change of any liquid in the event that it is experiencing stage change like in steam improvement.

 

Section 1

Using CIBSE Guide A the thermal values of a typical construction was used in order to determine the U-Values of 0.16 for the roof and 0.3 for the walls. Please see the below calculations;

Wall Calculation

 

Thermal Values of a Typical Construction

The top values reflect the dimensions of the materials used and the bottom values are the thermal conductivity values from table 3.47 of CIBSE Guide A. The surface and airspace values used in the calculation where from table 3.48 of CIBSE Guide A.

 

Roof Calculation

 

The top values in the below calculation again reflect the dimensions of the materials used and the bottom values are the thermal conductivity values from table 3.47,3.37 & 3.35 of CIBSE Guide A. The surface and airspace values used in the calculation where from table 3.48 of CIBSE Guide A

Section 2

The purpose of this assignment is to design the heating system by choosing either emitters, boilers, pumps etc. for the building layout provided. The choice of system selected will be identified within this report and all calculations and considerations will be taken into account when doing so.

Within this report the heat loss calculations will need to be collated for all the rooms on the first floor, this will then determine what type of emitters are required followed by the amount of heat required for each room.

U-Values;

Roof - 0.3 W/m2 oC

Floor – 0.13 W/m2 oC

Internal Partition Wall – 0.13 W/m2 oC

Exposed Wall – 0.16 W/m2 oC

Glazing – 2.1 W/m2 oC

Louvre – 2.5 W/m2 oC

Room Height 2.7m

Room Height in Corridor & Circulation Areas 2.4m

6 Air Changes per hour in Toilets

Heat Loss

Please see the heat loss calculations that have been completed by hand, this may take some considerable time to complete depending on the size of project. You can also do the heat loss calculations on various software packages.

There are two parts to the calculation of heat loss from any space. The fabric loss and the ventilation loss. The fabric loss consists of all the various areas of the structure that apply to the space (floor, roof, walls, windows, doors etc.) The ventilation loss is the rate of air change per hour.

The Fabric loss is calculated;

Q = U A ?t

Where;

Q = loss/gain of heat (Watts)

U = U-Value (W/m2 K)

A = Area of the fabric considered (m2)

?t = Difference in temperature either side of the fabric (oC)

Fabric Loss – Hall F-08

So for example the External partition calculation will be;

Q = 0.16 U-Value x (2.7 room height x 6.99 wall length) x 26 difference in temperature = 78.50

Surface

U Value

(W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.87

26

78.50

Internal Wall 2

0.13

20.28

0

0.00

Internal Wall 3

0.13

18.86

0

0.00

Internal Wall 4

0.13

20.28

0

0.00

Window(s)

2.1

14.49

26

791.15

Roof

0.3

52.46

26

409.19

Floor

0.13

52.46

0

0.00

Fabric Losses Total

1278.84

Calculations for Heat Loss and the Selection of Emitters

Ventilation loss - This is the rate of heat loss by the changing of air in the space a number of times per hour (Casado, Serafini, 2017).

The Ventilation loss is calculated;

Q = 0.33 N V ?t

Where;

Q = loss/gain of heat (Watts)

N = Number of air changes per hour

V = Volume of the room (m3)

?t = Difference in temperature either side of the fabric (oC)

So for example the internal partition calculation will be;

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Hall F-08

0.33

2

141.63

26

2430.45

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

3709.30

The same will be done for the rest of the rooms on the first floor;

Fabric Loss – Hall F-09

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.87

26

78.50

Internal Wall 2

0.13

20.28

0

0.00

Internal Wall 3

0.13

18.86

0

0.00

Internal Wall 4

0.13

20.28

0

0.00

Window(s)

2.1

14.49

26

791.15

Roof

0.3

52.46

26

409.19

Floor

0.13

52.46

0

0.00

Fabric Losses Total

1278.84

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Hall F-09

0.33

2

141.63

26

2430.45

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

3709.30

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.87

26

78.50

Internal Wall 2

0.13

20.28

0

0.00

Internal Wall 3

0.13

18.86

0

0.00

Internal Wall 4

0.13

20.28

0

0.00

Window(s)

2.1

14.49

26

791.15

Roof

0.3

52.46

26

409.19

Floor

0.13

52.46

0

0.00

Fabric Losses Total

1278.84

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Hall F-10

0.33

2

141.63

26

2430.45

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

3709.30

Fabric Loss – Hall F-11

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.87

26

78.50

Internal Wall 2

0.13

20.28

0

0.00

Internal Wall 3

0.13

18.86

0

0.00

Internal Wall 4

0.13

20.28

0

0.00

Window(s)

2.1

14.49

26

791.15

Roof

0.3

52.46

26

409.19

Floor

0.13

52.46

0

0.00

Fabric Losses Total

1278.84


Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Hall F-11

0.33

2

141.63

26

2430.45

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

3709.30

Fabric Loss – Hall F-12

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.87

26

78.50

Internal Wall 2

0.13

20.28

0

0.00

Internal Wall 3

0.13

18.86

0

0.00

Internal Wall 4

0.13

20.28

0

0.00

Window(s)

2.1

14.49

26

791.15

Roof

0.3

52.46

26

409.19

Floor

0.13

52.46

0

0.00

Fabric Losses Total

1278.84

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Hall F-12

0.33

2

141.63

26

2430.45

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

3709.30

Fabric Loss – Hall F-13

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.87

26

78.50

Internal Wall 2

0.13

20.28

0

0.00

Internal Wall 3

0.13

18.86

0

0.00

Internal Wall 4

0.13

20.28

0

0.00

Window(s)

2.1

14.49

26

791.15

Roof

0.3

52.46

26

409.19

Floor

0.13

52.46

0

0.00

Fabric Losses Total

1278.84


Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Hall F-13

0.33

2

141.63

26

2430.45

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

3709.30

Fabric Loss – Hall F-14

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

18.96

26

78.87

External Wall 2

0.16

20.79

26

86.49

External Wall 3

0.16

5.35

26

22.26

External Wall 4

0.16

5.74

26

23.88

Internal Wall 5

0.13

11.19

0

0.00

Internal Wall 6

0.13

5.06

0

0.00

Internal Wall 7

0.13

18.36

0

0.00

Window(s)

2.1

11.19

26

610.97

Roof

0.3

68.88

26

537.26

Floor

0.13

68.88

0

0.00

Fabric Losses Total

1359.73

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

IT Hall F-14

0.33

1

175.83

26

1508.60

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

2868.33

Fabric Loss – IT Office F-16

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

13.88

0

0.00

Internal Wall 2

0.13

7.72

0

0.00

Internal Wall 3

0.13

13.88

0

0.00

External Wall 4

0.16

7.72

26

32.12

Window(s)

2.1

1.25

26

68.25

Roof

0.3

14.70

26

114.66

Floor

0.13

14.70

0

0.00

Fabric Losses Total

215.03


Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

IT Office F-16

0.33

1

39.69

26

340.55

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

555.57

Fabric Loss – Curriculum Resources F-17

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

19.06

0

0.00

Internal Wall 2

0.13

10.10

0

0.00

External Wall 3

0.16

0.86

26

3.58

External Wall 4

0.16

19.06

26

79.29

External Wall 5

0.16

10.96

26

45.59

Window(s)

2.1

2.94

26

160.52

Roof

0.3

28.66

26

223.55

Floor

0.13

28.66

0

0.00

Fabric Losses Total

512.53

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Curriculum Resources F-17

0.33

0.7

77.39

26

464.81

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

977.35

Fabric Loss – Corridor F-18

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

50.55

0

0.00

Internal Wall 2

0.13

3.98

0

0.00

Internal Wall 3

0.13

16.77

0

0.00

Internal Wall 4

0.13

0.67

0

0.00

External Wall 5

0.16

33.79

26

140.57

External Wall 6

0.16

4.47

26

18.60

Window(s)

2.1

9.06

26

494.68

Roof

0.3

38.91

26

303.50

Floor

0.13

38.91

0

0.00

Fabric Losses Total

957.34

 

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Corridor F-18

0.33

1

92.87

26

796.78

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

1754.12

Fabric Loss – Corridor F-19

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

51.6

0

0.00

Internal Wall 2

0.13

4.37

0

0.00

External Wall 3

0.16

33.79

26

140.57

Internal Wall 4

0.13

0.67

0

0.00

Internal Wall 5

0.13

17.81

0

0.00

Internal Wall 6

0.13

3.98

0

0.00

Window(s)

2.1

9.06

26

494.68

Roof

0.3

37.95

26

296.01

Floor

0.13

37.95

0

0.00

Fabric Losses Total

931.25

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Corridor F-19

0.33

1

95.12

26

816.11

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

1747.36

Fabric Loss – Female WC F-07

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

7.48

0

0.00

External Wall 2

0.16

19.06

26

79.29

External Wall 3

0.16

19.06

26

79.29

External Wall 4

0.16

0.34

26

1.39

Internal Wall 5

0.13

8.78

0

0.00

Internal Wall 6

0.13

5.81

0

0.00

Internal Wall 7

0.13

4.68

0

0.00

Internal Wall 8

0.13

5.78

0

0.00

Internal Wall 9

0.13

5.27

0

0.00

Window(s)

2.1

1.88

26

102.65

Roof

0.3

37.75

26

294.45

Floor

0.13

37.75

0

0.00

Fabric Losses Total

557.07

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Female WC F-07

0.33

6

101.92

26

5246.76

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

5803.83

Fabric Loss – Staff WC F-06

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

5.54

0

0.00

Internal Wall 2

0.13

4.41

0

0.00

Internal Wall 3

0.13

5.54

0

0.00

Internal Wall 4

0.13

4.41

0

0.00

Window(s)

2.1

0

0

0.00

Roof

0.3

3.35

26

26.13

Floor

0.13

3.35

0

0.00

Fabric Losses Total

26.13

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Staff WC F-06

0.33

6

9.05

26

465.88

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

492.01

Fabric Loss – Tea Point F-05

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

11.21

0

0.00

Internal Wall 2

0.13

5.00

0

0.00

Internal Wall 3

0.13

11.21

0

0.00

Internal Wall 4

0.13

5.00

0

0.00

Window(s)

2.1

0.00

0

0.00

Roof

0.3

7.65

26

59.67

Floor

0.13

7.65

0

0.00

Fabric Losses Total

59.67


Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Tea Point F-05

0.33

1

20.73

26

177.86

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

237.53

Fabric Loss – Lift Lobby F-03

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

Internal Wall 1

0.13

8.21

0

0.00

Internal Wall 2

0.13

6.77

0

0.00

Internal Wall 3

0.13

8.78

0

0.00

Internal Wall 4

0.13

6.77

0

0.00

Window(s)

2.1

0

0

0.00

Roof

0.3

9.96

26

59.67

Floor

0.13

9.96

0

0.00

Fabric Losses Total

77.69

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Lift Lobby F-03

0.33

1

24.79

26

212.72

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

290.41

Fabric Loss – Plant Room F-02

Surface

U Value (W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

9.24

26

38.44

Internal Wall 2

0.13

18.35

0

0.00

Internal Wall 3

0.13

3.06

0

0.00

Internal Wall 4

0.13

6.72

0

0.00

Internal Wall 5

0.13

6.18

0

0.00

External Wall 6

0.16

11.63

26

48.38

Louvre

2.55

3.94

26

261.22

Roof

0.3

17.56

26

136.97

Floor

0.13

17.56

0

0.00

Fabric Losses Total

485.01

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Plant Room F-02

0.33

1

47.42

26

406.85

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

891.86

Fabric Loss – Link F-01

Surface

U Value

(W/m2 oC)

Area (m2)

Temperature Distance (oC)

Heat Loss (W)

External Wall 1

0.16

13.1

26

54.50

Internal Wall 2

0.13

11.88

0

0.00

External Wall 3

0.16

12.65

26

52.62

External Wall 4

0.16

4.51

26

18.76

External Wall 5

0.16

1.31

26

5.45

External Wall 6

0.16

0.82

26

3.41

Window(s)

2.1

27.32

26

1491.67

Roof

0.3

17.39

26

135.64

Floor

0.13

17.39

0

0.00

Fabric Losses Total

1762.06

Ventilation Loss

0.33

Air Change rate

Volume (m3)

Temperature Difference (oC)

Losses (W)

Link F-01

0.33

1

43.22

26

370.84

Fabric Loss + Ventilation Losses = Total Heat Loss (W)

2132.90

From the below results you can see the total heat loss calculations for the complete first floor of the building.

Roof Loss

4660.66W

Floor Loss

0 W

External Wall Loss

1524.33 W

Internal Wall Loss

0 W

Window/ Louvre Loss

8431.57 W

Fabric Loss

14616.56W

Ventilation Loss

25390.49 W

Total Heat loss

40007.05 W

Using the total losses for all the rooms the radiators and boiler can be sized (Chen, X., Zhang, Z., Shi, J., Yang, 2016).

Heat Gains and Natural Ventilation

For a typical office on the first please see the below calculations for the peak heat gain, assuming full occupation, use of lighting and equipment.

Calculations for heat loads

Using Tables A6.1 to A6.11 from CIBSE Concise Handbook/ CIBSE Guide A, and the given design requirements, the below table showing heat gains can be created. The heat losses are from the calculated values in Section one of this report (Andrews & Young, 2016).

 IT Office (14.7m2)

Sensible Heat Gain

Latent Heat Gain

Heat Loss

w

w

w

2 people

70 x 2

140

45 x 2

90

555.57

PCs (2no.)

55 x 2

110

PC Monitors (2no.)

70 x 2

140

Desktop Printer (2no.)

75 x 2

150

Desktop Photocopier (2no.)

85 x 2

170

Scanner (1no.)

25 x 1

25

Lighting

35 x 14.7

514.5

Solar Gain

N/A

1249.5w

90w

555.57w

As the windows of the room are north facing we have assumed that the solar gains are negligible.

If total heat gains are 2000W

 

Conclusion

Notwithstanding, beginning late, air-source warm pump advancement has pushed with the target that it now offers an honest to goodness space warming option in colder areas. A 3-way focal warming pump is best to plan of focal warming pump assurance. In event of completely pumped open vented structure, the water is "pumped" around the foaming water and focal warming circuits. An empowered valve controls used to control the surge of water through the high temp water circuit or the focal warming circuit as fitting.

References

Cockroft, J., Cowie, A., Samuel, A., & Strachan, P. (2017). Potential energy savings achievable by zoned control of individual rooms in UK housing compared to standard central heating controls. Energy and Buildings, 136, 1-11.

Dellwig, S., & Lipinski, J. (2017). U.S. Patent No. 9,593,858. Washington, DC: U.S. Patent and Trademark Office.

Casado, M. R., Serafini, J., Glen, J., & Angus, A. (2017). Monetising the impacts of waste incinerators sited on brownfield land using the hedonic pricing method. Waste Management, 61, 608-616.

Chen, X., Zhang, Z., Shi, J., Yang, Z., & Chen, J. (2016). Research on the operating characteristics of floor heating system with residential EVI air source heat pump in China.

Andrews, L., & Young, R. (2016). U.S. Patent No. 9,328,932. Washington, DC: U.S. Patent and Trademark Office.

Cite This Work

To export a reference to this article please select a referencing stye below:

My Assignment Help. (2020). Designing A Central Heating System For A Bungalow In The UK. Retrieved from https://myassignmenthelp.com/free-samples/cpc32413-certificate-iii-in-plumbing.

"Designing A Central Heating System For A Bungalow In The UK." My Assignment Help, 2020, https://myassignmenthelp.com/free-samples/cpc32413-certificate-iii-in-plumbing.

My Assignment Help (2020) Designing A Central Heating System For A Bungalow In The UK [Online]. Available from: https://myassignmenthelp.com/free-samples/cpc32413-certificate-iii-in-plumbing
[Accessed 14 July 2024].

My Assignment Help. 'Designing A Central Heating System For A Bungalow In The UK' (My Assignment Help, 2020) <https://myassignmenthelp.com/free-samples/cpc32413-certificate-iii-in-plumbing> accessed 14 July 2024.

My Assignment Help. Designing A Central Heating System For A Bungalow In The UK [Internet]. My Assignment Help. 2020 [cited 14 July 2024]. Available from: https://myassignmenthelp.com/free-samples/cpc32413-certificate-iii-in-plumbing.

Get instant help from 5000+ experts for
question

Writing: Get your essay and assignment written from scratch by PhD expert

Rewriting: Paraphrase or rewrite your friend's essay with similar meaning at reduced cost

Editing: Proofread your work by experts and improve grade at Lowest cost

loader
250 words
Phone no. Missing!

Enter phone no. to receive critical updates and urgent messages !

Attach file

Error goes here

Files Missing!

Please upload all relevant files for quick & complete assistance.

Plagiarism checker
Verify originality of an essay
essay
Generate unique essays in a jiffy
Plagiarism checker
Cite sources with ease
support
Whatsapp
callback
sales
sales chat
Whatsapp
callback
sales chat
close