A study of secondary heat recovery efficiency of a heat pipe heat exchanger air conditioning system

Wang, Haitao; Zhou, Shunbao; Wei, Zhongshi; Ren, Wei

doi:10.1016/j.enbuild.2016.09.061

Cited by 28 publications

(7 citation statements)

References 8 publications

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“…Following it, numerous alternatives have been proposed that can substantially decrease the cost of the catalyst. [5][6][7] However, the resulting catalytic performance is often inferior to that of the analogous noble-metal systems. The other strategy focuses on the more efficient utilization of the noble metal rather than its substitution.…”

Section: Introductionmentioning

confidence: 99%

Towards stable single-atom catalysts: strong binding of atomically dispersed transition metals on the surface of nanostructured ceria

Figueroba

Kovács

Bruix

et al. 2016

Catal. Sci. Technol.

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Section: Introductionmentioning

confidence: 99%

Towards stable single-atom catalysts: strong binding of atomically dispersed transition metals on the surface of nanostructured ceria

Figueroba

Kovács

Bruix

et al. 2016

Catal. Sci. Technol.

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“…The analysis of experimental data revealed that the average heat recovery efficiency of the HPHE AC system in winter is 21.08%, while 39.2% in summer. The results show that the secondary heat recovery HPHE AC system has a certain energy-saving advantage [4].…”

Section: Literature Reviewmentioning

confidence: 83%

Development and Analysis of Waste Heat Recovery System by Air Conditioning Application

Agrawal¹

2017

IJETED

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At domestic commercial and industrial level, lots of air conditioners units are being used nowadays. There is a need to decrease the wastage of heat energy using processes of waste heat energy recovery. Formerly this waste heat energy is able to be renewed to several supplementary convenient useful form of energy.In this research work the waste heat energy recovery of an air conditioning system has been compared and measured.In the present system, we have four major units in our air conditioners system i.e. compressor,evaporator, condenser& expansion valve.In these units we are recovering heat from condenser by which we have arranged cross flow system in condenser to recover maximum heat from that. In the condenser which we are introducingthe hot air coming from the condenser units will flow to our arrangement of water fins which is based on the cross flow (water and air).The advantages of this system is that it will improve the efficiency of our condenser unit and minimize the global temperature which is also a major reason of increasing global warming and as we know global worming harms the ozone layer.This theoretical and experimental research has been completed on basis of previous papers. In this research three types of air conditioner are being used. The system which has been developed is observing more heat from the system than conventional air conditioner system.

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“…Omara et al presented a review on the different methods of using phase change materials (PCMs) for improving the performance of air conditioning systems. Wang et al proposed a heat pipe air conditioning (AC) system using heat pipe heat exchanger (HPHE) to realize secondary heat recovery. They revealed that the average heat recovery efficiency in winter is 21.08% and 39.2% in summer.…”

Section: Introductionmentioning

confidence: 99%

Energy‐efficient hybrid A/C and freshwater production system proposed for high latent load spaces

2019

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Summary Huge amount of energies is consumed by the air conditioning (A/C) to maintain the required temperature and humidity inside spaces/applications of high humidly. An innovative A/C system that recovers the condenser heat in process air reheating and other useful thermal utilization is presented and investigated in this paper. For high coefficient of performance (COP) of the AC and more energy‐efficient system, the cold exhaust air rejected by the air condition system is also utilized to cool the condenser of the AC system. Huge amount of the water condensate from the system is also utilized as freshwater production. Performance of the proposed system is analytically investigated for different operating conditions and system capacities. Mathematical model of the systems is developed and solved numerically using Engineering Equation Solver (EES) software. Results show that the proposed system enhances the COP and decreases the electric power consumption. The saving in electric power consumption, COP, and the freshwater production rate of the system increases with decreasing room‐sensible heat factor, fresh air ratio, and outdoor air temperature and humidity. Moreover, the COP of the proposed system is 90% higher than COP of the basis system, and the savings in the running cost of the system increase by 4.5 times with decreasing the room‐sensible heat factor (RSHF) from 0.6 to 0.2. In addition, the highest COP attained by the proposed system is 2.72, and the corresponding freshwater production rate is 373.8 kg/h.

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A study of secondary heat recovery efficiency of a heat pipe heat exchanger air conditioning system

Cited by 28 publications

References 8 publications

Towards stable single-atom catalysts: strong binding of atomically dispersed transition metals on the surface of nanostructured ceria

Towards stable single-atom catalysts: strong binding of atomically dispersed transition metals on the surface of nanostructured ceria

Development and Analysis of Waste Heat Recovery System by Air Conditioning Application

Energy‐efficient hybrid A/C and freshwater production system proposed for high latent load spaces

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