Heat pump water heater enthalpy difference laboratory DMS

5Explosion proof air conditioner/Heat pump water heater enthalpy difference laboratory

1Heat pump water heater enthalpy difference laboratoryTechnical Requirements

1、Product testing standards

GB/T 7725 Room Air Conditioner (2013 Annual Report Approval Version, Used in conjunction with GB2145-2013)

GB 4706.32-2012 Special requirements for anquan heat pumps, air conditioners, and dehumidifiers for household and similar electrical appliances (providing indoor and outdoor explosion-proof environments)

2、Heat pump water heater enthalpy difference laboratoryDesign and installation specifications

GB 50274-1998 Code for Construction and Acceptance of Refrigeration Equipment and Air Separation Equipment Installation Engineering

GB 50236-1998 Code for Construction and Acceptance of Field Equipment, Industrial Pipeline Welding Engineering

GB 50231-1998 Code for Construction and Acceptance of Mechanical Equipment Installation Engineering

GB 50243-2002 Code for Construction and Acceptance of Ventilation and Air Conditioning Engineering

GB 50303-2002 Code for Construction and Acceptance of Building Electrical Engineering

GB 50194-1993 Code for Electricity Supply and Consumption at Construction Sites in Construction Projects

GB/T 50114-2001 HVAC Engineering Drawing Standard

GB 9237-2001 Mechanical refrigeration systems for refrigeration and heating - Anquan requirements

3Heat pump water heater enthalpy difference laboratorytest method

The measurement of cold and heat for air conditioners/unit air conditioning units is carried out using a single-sided (indoor side) wind tunnel air enthalpy difference method. On the indoor air side, the cooling capacity, sensible heat cooling capacity, and latent heat cooling capacity are calculated by measuring the enthalpy difference (temperature difference) and circulating air volume of the indoor unit of the air conditioner.

Circulating heat pump water heater calculates heating capacity by measuring and testing water quality, heating time, and temperature rise.

Static heat pump water heater, using liquid flow meter method, calculates cooling and heating capacity by measuring inlet and outlet water temperature and water flow rate.

During safety testing, it is possible to operate air conditioning products filled with flammable refrigerants such as R290 and provide an appropriate explosion-proof environment.

4Heat pump water heater enthalpy difference laboratorytest project

The test conditions for T1, T2, T3 climate type air conditioners specified by national standards can be carried out, including the air conditioner conditions required by European standard EN14825. Rated cooling and heating tests, as well as power consumption, cooling capacity and heating capacity, latent cooling capacity and sensible cooling capacity, sensible heat ratio, cooling and heating power consumption, cooling and heating performance coefficients, * high load conditions, * low cooling conditions, * low heating conditions, condensation conditions, unit system temperature, pressure, speed, frequency, tested electromechanical parameters: voltage, current, power, power factor, automatic defrosting, low-temperature heating conditions, variable operating condition tests, freezing tests, performance, etc.

According to the requirements of European standard EN14825, the cooling and heating capacity, power consumption in temperature controller disconnect mode, power consumption in standby mode, power consumption in shutdown mode, and power consumption in electric heating mode of air-cooled air conditioners can be tested.

Considering the testing requirements for air conditioners filled with flammable refrigerants (such as R290) in GB4706.32-2012, the laboratory has explosion-proof functions and takes explosion-proof measures for indoor and outdoor areas that can cause ignition of flammable refrigerants; Take measures to avoid the accumulation of flammable refrigerants indoors and outdoors, and have an automatic monitoring and discharge system for flammable refrigerants.