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Total Energy Heat Pump

  • Y. H. Venus LunEmail author
  • S. L. Dennis Tung
Chapter
  • 415 Downloads
Part of the Green Energy and Technology book series (GREEN)

Abstract

Air source heat pump is one of the most popular heat pump systems. This chapter starts with the discussion of heat rejection and heat absorption operations of air source heat pump. Power consumption of key components of the heat pump is also examined. Then the operations of water-to-water heat pumps are discussed. Heat pumps are devices that operate in the vapor compression refrigeration system. Energy and exergy analysis are important in investigating vapor compression refrigeration system. With advanced technology, heat pump is capable to provide many functions. The basic functions of heat pump are heating and cooling. Water-to-water heat pump is capable to provide both hot water for heating and chilled water for cooling. However, the water-to-water heat pump is unable to apply to system that does not have a balance demand for heating and cooling. With recent heat pump technology, total energy heat pump is available to serve chilled water and hot water plant and is capable to produce chilled water and hot water to meet fluctuating cooling and heating demand. A case study on hotel is employed to illustrate the application of total energy heat pump.

Keywords

Heat rejection Heat absorption Air source heat pump Water source heat pump Energy analysis Exergy analysis Energy balance Compression refrigeration system Total energy heat pump 

Nomenclature

A

Area

COP

Coefficient of performance

Cp

Specific heat

dp

Total pressure

\(\dot{E}\)

Energy rate

h1

Specific enthalpy at stage 1

h2

Specific enthalpy at stage 2

h3

Specific enthalpy at stage 3

h4

Specific enthalpy at stage 4

h (h2h1)

Enthalpy difference stage 2 and stage 1

HR

Heat rejection

\(\dot{m}\)

Mass flow rate

η

Efficiency

q

Air volume delivered

Q

Output capacity

\(\dot{Q}\)

Heat transfer rate

U

Overall heat transfer coefficient

W

Power input (W)

\(\dot{W}\)

Power

\(\dot{W}_{\text{i}}\)

Compression indicated power

Subscript

comp

Compressor

cond

Condenser

dest

Destroy (or destruction)

fan

Fan

eva

Evaporator

ht

Heat exchanger

in

Inlet (or input)

out

Outlet (or output)

r

Refrigerant

w

Water

References

  1. 1.
    Adhikari RS, Aste N, Manfre M, Marini D (2012) Energy saving through variable speed compressors heat pump systems. Energy Procedia 14:1337–1342CrossRefGoogle Scholar
  2. 2.
    Calm JM (1987) Heat pumps in the USA. Int J Refrig 10:190–196CrossRefGoogle Scholar
  3. 3.
    Rajapaksha L (2007) Influence of special attributes of zeotropic refrigerant mixtures on design and operation of vapour compression refrigeration and heat pump system. Energy Convers Manag 48(2):539–545CrossRefGoogle Scholar
  4. 4.
    Comkali K, Simsek F, Comakli O, Sahin B (2009) Determination of optimum working conditions R22 and R404A refrigerant mixtures in heat pumps using Taguchi method. Appl Energy 86(11):2451–5458CrossRefGoogle Scholar
  5. 5.
    Liu Z, Li X, Wang H, Pang H (2008) Performance comparisons of air source heat pump with R407C and R22 under forsting and defrosting. Energy Convers Manag 49(2):232–239CrossRefGoogle Scholar
  6. 6.
    Han DH, Lee KJ, Kim YH (2003) Experiments on the characteristics of evaporation of R410A in brazed plate heat exchangers with different geometric configurations. Appl Therm Eng 23(10):1209–1225CrossRefGoogle Scholar
  7. 7.
    Chen WA (2008) A comparative study on the performance and environmental characteristics of R410A and R22 residential air conditioners. Appl Therm Eng 28(1):1–7CrossRefGoogle Scholar
  8. 8.
    Lu L, Cai W, Xie L, Li S, Soh YC (2005) HVAC system optimization: in-building section. Energy Build 37:11–22Google Scholar
  9. 9.
    Lbrahim O, Fardoun F, Younes R, Louahlia-Gualous H (2014) Air source heat pump water heater: dynamic modelling, optimal energy management and mini-tubes condensers. Energy 64:1102–1116CrossRefGoogle Scholar
  10. 10.
    Bertsch S, Groll EA (2008) Two stage air-source heat pump for residential heating and cooling applications in northern U.S. climates. Int J Refrig 31:1282–1292CrossRefGoogle Scholar
  11. 11.
    Hajidavalloo E, Eghtedari H (2010) Performance improvement of air-cooled refrigeration system by using evaporatively cooled air condenser. Int J Refrig 33:982–988CrossRefGoogle Scholar
  12. 12.
    Ozgener O (2005) Experimental performance analysis of a solar assisted ground-source heat pump green hose heating system. Energy Build 27:101–110CrossRefGoogle Scholar
  13. 13.
    Hepbasil A, Kalinci Y (2009) A review of heat pump water heating systems. Renew Sustain Energy Rev 13(6/7):1211–1229CrossRefGoogle Scholar
  14. 14.
    Guillermo EVO, Ochoa SLC, Milled de Jesus PN (2018) Application of a genetic algorithm to optimize the energy performance of a vapor compression refrigerant system. Contemp Eng Sci 11(25):1245–1254CrossRefGoogle Scholar
  15. 15.
    Li YW, Wang RZ, Wu JY, Xu YX (2007) Experimental performance analysis of a direct expansion solar assisted heat pump water heater. Appl Therm Eng 27:2858–2868CrossRefGoogle Scholar
  16. 16.
    Chua KJ, Chou SK, Yang WM (2010) Advances in heat pump reviews: a review. Appl Energy 87:3611–3624CrossRefGoogle Scholar
  17. 17.
    Wang W, Ma Z, Yang Y, Xu S, Yang Z (2005) Field test investigation of a double stage coupled heat pumps heating system for cold regions. Int J Refrig 28(5):672–679CrossRefGoogle Scholar
  18. 18.
    Laue HJ (2006) Heat Pump. Renew Energy 3C:605–626CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Sustainable Energy LimitedHong KongPR China
  2. 2.Sustainable Energy LimitedHong KongPR China

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