Performance improvement of air source heat pump using gas-injected rotary compressor through port on blade

Wang, Baolong; Liu, Xingru; Shi, Wenxing

doi:10.1016/j.ijrefrig.2016.09.017

Cited by 33 publications

(4 citation statements)

References 20 publications

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“…The use of a cooling capacity control system forms an indispensable element in refrigeration systems, the duration of products at a specified temperature is defined on its basis [4]. This is a necessary element of a refrigeration system [5], although it leads to the decrease of the value of COP. The paper presents an approach taken to determine the COP coefficient for a refrigeration system coupled with a dedicated control system.…”

Section: Fig 1 Principle Of Operation Of a Typical Refrigeration Symentioning

confidence: 99%

“…The heat conducted through the walls of the container cannot be underestimated Q. On this basis, the power balance equation was derived in the form: = + + (2) The values of power delivered from the water tank and the power derived from the air inside the chamber are calculated on the basis of the measurements from the relations in (4) and (5). The power transmitted through the walls of the cooling chamber is calculated on the basis of the conduction law on the basis of equation (6).…”

Section: Laboratory Determination Of Copmentioning

confidence: 99%

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Sposób Wyznaczenie Współczynnika Cop Dla Układu Chłodniczego

Rząsa

Pochwała

Szymaniec

2020

IAPGOS

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Podstawowym problemem metrologicznym, który autorzy pragną przedstawić jest eksperymentalne wyznaczenie współczynnika COP dla układu chłodniczego, pracującego w stacjonarnej komorze chłodniczej. Zagadnienie to jest istotne, ponieważ producenci agregatów chłodniczych najczęściej podają współczynnik COP dla agregatu chłodniczego. W praktyce po zamontowaniu agregatu chłodniczego w komorze chłodniczej współczynnik COP jest niejednokrotnie niższy. Trudność z wyznaczeniem współczynnika COP w układzie chłodniczym polega na koniczności zbilansowania mocy chłodniczej dla całego układu wraz z komorą chłodniczą. W pracy przedstawiono sposób bilansowania energii chłodniczej dla kompletnego układu chłodniczego oraz opisano budowę stanowiska do wyznaczania współczynnika COP.

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Section: Fig 1 Principle Of Operation Of a Typical Refrigeration Symentioning

confidence: 99%

Section: Laboratory Determination Of Copmentioning

confidence: 99%

Sposób Wyznaczenie Współczynnika Cop Dla Układu Chłodniczego

Rząsa

Pochwała

Szymaniec

2020

IAPGOS

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“…The HTHP system model could be established and calculated using the outlet parameters calculated in the heat and mass transfer model. The ASHP system model could be established by relating the evaporation temperature to the ambient air temperature (Wang et al, 2017). Then, the COP of the HTHP system and the ASHP system under non-frost condition were determined by:…”

Section: Fig 4 P-h Diagram Of the Vapor Compression Heat Pump Cyclementioning

confidence: 99%

An exploration on the applicability of heating tower heat pump and air source heat pump systems in different climatic regions

Liu

Jiang

Zhang

et al. 2019

Journal of Cleaner Production

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Air source heat pump (ASHP) and heating tower heat pump (HTHP) systems are both environmentally sustainable space heating systems. HTHP system can effectively avoid the frosting issue of ASHP systems, but requires higher initial investment. In order to explore the applicability of the two systems, this paper presents a comparative study between HTHP and ASHP systems in different climatic regions. Mathematical models were developed for HTHP and ASHP systems and validated by field experiments. Case studies were carried out in four different climatic regions using the numerical model to analyze the energy consumption, system efficiency and economic efficiency of the two systems. The results showed that the ASHP system was superior in electrical power input in the four regions. The EER of the HTHP system was higher than that of the ASHP system by 3% and 2% in Regions III and II (Xi'an and Shanghai) while lower by 7% and 6% in Regions I and IV (Shenyang and Chongqing). The annual cost of the HTHP system was higher than that of ASHP system by 9% and 11% in Regions I and IV, while lower by 5% and 4% in Regions II and III. Based on these comparisons, recommendations about how to choose HTHP and ASHP systems for different climatic regions were presented, to instruct future optimization and utilization of HTHP and ASHP systems.

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“…Scroll compressors have the advantages of simple structure, small volume, lower cost, and easier control, making them more suitable for micro CAES systems [16]. Emhardt et al [17] investigated the effects of different scroll geometric parameters on the performance of a constant wall thickness scroll expander, considering the use of variable wall thickness and its impact on performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Output Performance of Scroll Compressor for Micro Scale Compressed Air Energy Storage System

Fang,

Xu,

Zhang

et al. 2023

Sustainability

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Micro compressed air energy storage systems are a research hotspot in the field of compressed air energy storage technology. Compressors and expanders are the core equipment for energy conversion, and their performance has a significant impact on the performance of the entire compressed air energy storage system. Scroll compressors have the advantages of small size, low noise, light weight, low vibration, long service life, continuous and stable gas transmission, and reliable operation. This article builds a micro compressed air energy storage system based on a scroll compressor and studies the effects of key parameters such as speed, torque, current, and storage tank pressure on the temperature difference, pressure ratio, energy consumption, and efficiency of the scroll compressor. The experimental results indicate that the power consumption of the scroll compressor shows an increasing trend with the increase in current, torque, and gas storage tank pressure. The isentropic efficiency of a scroll compressor shows a decreasing trend with increasing current, torque, and storage tank pressure. The maximum values of power consumption and isentropic efficiency of the scroll compressor are 3427 W and 90.8%, respectively.

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Performance improvement of air source heat pump using gas-injected rotary compressor through port on blade

Cited by 33 publications

References 20 publications

Sposób Wyznaczenie Współczynnika Cop Dla Układu Chłodniczego

Sposób Wyznaczenie Współczynnika Cop Dla Układu Chłodniczego

An exploration on the applicability of heating tower heat pump and air source heat pump systems in different climatic regions

Experimental Research on the Output Performance of Scroll Compressor for Micro Scale Compressed Air Energy Storage System

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