研究目的
Investigating the operational performance of a novel heat pump system coupled with mini-channel PV/T and thermal panels for space heating in low solar radiation conditions.
研究成果
The novel system demonstrates effective space heating and electricity generation under low solar radiation conditions, with significant efficiencies and a COP of 4.7. Suggested improvements include using a double-source heat pump, minimizing the use of PV/T and thermal panels, and removing batteries to simplify the system and reduce costs.
研究不足
The system's initial cost is high due to the large number of PV/T and thermal panels required, and the water-source heat pump has a limited energy source, restricting its operation time.
1：Experimental Design and Method Selection:
The study involves constructing a novel solar assisted indirect-expansion heat pump system with mini-channel PV/T and thermal panels connected in series to the heat storage tank and evaporator of the heat pump.
2：Sample Selection and Data Sources:
The system was tested in Lüliang city, China, during winter with low solar radiation conditions.
3：List of Experimental Equipment and Materials:
Includes PV/T panels, thermal panels, a heat storage tank, a water-source heat pump, solar batteries, and an inverter.
4：Experimental Procedures and Operational Workflow:
The system's performance was monitored from 9:30 to 16:00 over several days in December, measuring temperatures, solar radiation, output power, and flow rates.
5：Data Analysis Methods:
The performance was evaluated based on electrical, thermal, and overall efficiencies of the PV/T panels, thermal efficiency of the thermal panels, and the COP of the heat pump.
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