scholarly journals Air-to-water heat pump assessment: Part 1 – Experimental setup

2021 ◽  
Vol 327 ◽  
pp. 01009
Author(s):  
Nadezhda Doseva ◽  
Daniela Chakyrova ◽  
Svetoslav Stoianov ◽  
Ilia Hadhidimov
Keyword(s):  
Heat Transfer ◽  
Heat Pump ◽  
Transfer Rate ◽  
Cost Allocation ◽  
Experimental Tests ◽  
Experimental Setup ◽  
Ambient Conditions ◽  
Pump Unit ◽  
Heat Pump Unit ◽  
The Cost

This paper is part 1 of the investigation on the exergetic and exergoeconomic parameters of an existing system with an air-to-water heat pump unit as a heat source. Part 1 presents the used experimental setup. The main aim of the conducted experimental tests is to develop a model of produced heat transfer rate and energetic COP at different ambient conditions. The obtained data is used in Part 2 of the study where the exergetic and exergoeconomic assessment is carried out. The performance of the considered system is evaluated using Seasonal Exergy Efficiency. Moreover, Part 2 of the study has presented the formulation of the cost of the product, and cost allocation within the heat pump unit based on exergy.

scholarly journals Air-to-water heat pump assessment: Part 2 – Exergetic and exergoeconomic analyses

2021 ◽  
Vol 327 ◽  
pp. 01010
Author(s):  
Nadezhda Doseva ◽  
Daniela Chakyrova
Keyword(s):  
Heat Pump ◽  
Heat Rate ◽  
Experimental Tests ◽  
Exergetic Efficiency ◽  
Ambient Conditions ◽  
Pump Unit ◽  
Pump System ◽  
Heat Pump System ◽  
Heat Pump Unit ◽  
Exergoeconomic Analysis

This study is part 2 of the investigation on the exergetic and exergoeconomic parameters of an existing system with an air-to-water heat pump unit as a heat source. Part 1 presents the used experimental setup. The main aim of the conducted experimental tests is to develop models of produced heat rate and energetic COP at different ambient conditions. The obtained data is used in Part 2 of the study where the exergetinc and exergoeconomic assessment is carried out. The exergetic and exergoeconomic analysis was performed at dynamically changing ambient parameters. The considered operation modes of the air-to-water heat pump (AWHP) unit and backup heater (BUH) were evaluated based on Seasonal Exergetic Efficiency. For the exergoeconomic analysis, the SPECO method is used. Thus, this paper provides an exhaustive understanding of the exergy and exergoeconomic performance of the considered air-to-water heat pump system.

Study on the Adjustment Law of Supply Water Temperature of the Fan Coil Unit Based on Daily Air-Conditioning Load

2011 ◽  
Vol 374-377 ◽  
pp. 538-542 ◽  
Author(s):  
Zhi Jie Gao ◽  
Zhi Wei Wang ◽  
Ji Feng Zhao
Keyword(s):  
Heat Transfer ◽  
Water Temperature ◽  
Heat Pump ◽  
Air Conditioning ◽  
Heat Transfer Performance ◽  
Residential Buildings ◽  
Transfer Performance ◽  
Pump Unit ◽  
Heat Pump Unit ◽  
Supply Water

A new adjustment law of supply water temperature of heat pump unit was presented by analyzing heat transfer performance and computing supply water temperature of fan coil unit (FCU) in this paper. The paper established the energy equations for air side, water side and FCU in dry and wet conditions, respectively. And the heat transfer performance of FCU was obtained by analyzing the manufacturers’ performance data. According to an actual central air-conditioning system of residential buildings, we calculated the daily inlet water temperature of FCU and proposed the adjustment law for supply water temperature. The results show that the supply water temperature of cooling design day is 9.3°C, the daily supply water temperature of cooling season is higher than 7°C; the supply water temperature of heating design day is 36.4°C, the highest in heating season is 38.5°C, which is below the rated supply water temperature of heat pump unit, 45°C.

Research and Development of Ground Source Heat Pump Unit Remote Real-Time Monitoring System

2011 ◽  
Vol 121-126 ◽  
pp. 2162-2166
Author(s):  
Yan Mei Meng ◽  
Hai Feng Pang ◽  
Ying Ning Hu ◽  
Quan Zhou ◽  
Dao Yang Li ◽  
...  
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Heat Pump ◽  
Host Computer ◽  
Ground Source Heat Pump ◽  
Real Time Monitoring ◽  
Pump Unit ◽  
Pump System ◽  
Ground Source ◽  
Heat Pump Unit

This paper describes the research and implementation of ground source heat pump unit remote real-time monitoring system, researches in remote real-time monitoring system's overall design, hardware design, software design and implementation of OPC communication. The host computer takes advantage of the human-computer interaction interface of configuration software to achieve the remote real-time monitoring for ground source heat pump unit's running state; the lower computer uses data collector to intensively collect the data which is measured by field measuring instruments, and to achieve remote data transmission based on Ethernet, and then to carry out the communication between the host computer and the lower computer via OPC technology. The results show that the system achieves remote real-time monitoring of ground source heat pump unit, and is stable, easy to operate and provides a reliable basis for the actual energy saving effect's evaluation of ground source heat pump system.

Energy transfer procession in an air source heat pump unit during defrosting

2017 ◽  
Vol 204 ◽  
pp. 679-689 ◽  
Author(s):  
Mengjie Song ◽  
Xiangguo Xu ◽  
Ning Mao ◽  
Shiming Deng ◽  
Yingjie Xu
Keyword(s):  
Energy Transfer ◽  
Heat Pump ◽  
Pump Unit ◽  
Air Source Heat Pump ◽  
Heat Pump Unit

Research on the Heating Plan of Recovering Condensing Heat of Power Plant by Water Source Heat Pump Unit

2012 ◽  
Vol 608-609 ◽  
pp. 1241-1245
Author(s):  
Wei Qiu ◽  
Li Zhang ◽  
Qing Rong liu
Keyword(s):  
Power Plant ◽  
Heat Pump ◽  
Air Conditioning ◽  
Waste Heat ◽  
Water Source ◽  
Pump Unit ◽  
Air Conditioning System ◽  
Central Heating ◽  
Heat Pump Unit ◽  
Direct Discharge

This paper analyses the energy consumption of water source heat pump, shows that the performance coefficient of water source heat pump unit is directly related to the temperature of water resources, and discusses the feasibility of central heating by recovering condensing heat of power plant using water source heat pump unit. It analyzes the energy saving benefit of water source heat pump unit is significant compared with traditional heating. Using the technology recovers waste heat of power plant, which can not only decrease the energy waste on the direct discharge of waste heat and water, but at the same time, it is a new air conditioning system without environmental pollution.

The Monitoring Software Design of Performance Test-Bed of Heat Pump Unit

2013 ◽  
Vol 475-476 ◽  
pp. 192-197
Author(s):  
Jian Wen Feng ◽  
Li Peng Wang
Keyword(s):  
Heat Pump ◽  
Performance Test ◽  
Fault Tolerant ◽  
Monitoring Program ◽  
Monitoring Systems ◽  
Air Conditioner ◽  
Test Bed ◽  
Pump Unit ◽  
Heat Pump Unit ◽  
Monitoring Software

Performance test-bed of heat pump unit in central air-conditioner needs the intelligent and multifunctional software. So the monitoring software is designed with a good human-machine interactive interface, based on Visual C# development platform. The software can dynamically configure channels and measurement points to improve the defects of fixed channels for all measuring points in the traditional monitoring systems, which enhanced the flexibility and reliability of system. In order to increase the data accuracy, the improved digital filter algorithm was adopted. In addition, multi-threading mechanism was used to achieve serial communication and data processing, which meets the requirements of monitoring program for multi-tasking and real-time. The results show that monitoring software is powerful, easy to operate, reliable, high fault-tolerant and good user-friendly. It is suitable for using in other monitoring systems.

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