Quality appraisal of air energy hot water system

air energy hot water system is a water heating system that uses air thermal energy. Its working principle is to collect air heat energy through the outdoor air collection system and supply hot water indoors through the evaporation and condensation process of the refrigerant. The air source heat pump technology used in the
air-energy hot water system does not work well when the outdoor ambient temperature is below -10°C, so it is suitable for areas with higher temperatures. The air-energy hot water system requires outdoor air to heat water, so the influence of the outdoor environment on the system operation needs to be considered.
In the case of air energy hot water system quality appraisal, Zhongke Testing can provide air energy hot water system quality appraisal services.

is divided into: integrated and split type according to the structure;
is divided into: direct heating type, circulating type, water circulation type, refrigerant circulation type according to the heating method;
is divided into: household machine and commercial machine according to the use;
is divided into: small air energy hot water engineering, medium air energy hot water engineering, large air energy hot water engineering according to the water consumption;
is classified by location: hotel air-energy hot water engineering, school air-energy hot water engineering, factory dormitory air-energy hot water engineering, hospital air-energy hot water engineering, hotel air-energy hot water engineering, apartment air-energy hot water engineering, foot massage air-energy hot water engineering, beauty salon air-energy hot water engineering, villa air-energy hot water engineering, industrial high-temperature hot water air-energy hot water engineering, swimming pool air-energy hot water engineering, drying air-energy hot water engineering, etc.

GB 50353-2005 General principles for civil building design
JB 8654-1997 Safety requirements for volumetric and centrifugal cold water (heat pump) units
GB/T 23889-2009 Technical conditions for household air source heat pump-assisted solar hot water systems
GB/T 26973-2011 Technical specification for air source heat pump-assisted solar water heating system (water storage tank volume greater than 0.6m3)

The air-energy hot water system purchased by a hotel did not meet the technical requirements stipulated in the agreement, and a dispute arose with the equipment manufacturer.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" in the air energy hot water system involved in the case.
appraisal analysis results:
appraisal analysis expert group discussed the relevant information and on-site investigation of the air-energy hot water system involved in the case and made a comprehensive quality technical analysis, and made the following suggestions and conclusions:
1. The design selection of the air-energy hot water system involved in the case is too small, and its heating performance cannot meet the design and on-site demand for hot water supply under 0°C working conditions; 2. Based on the current situation, the air energy hot water system involved in the case has quality defects and safety hazards.