Gas boiler quality appraisal

Gas boiler is a kind of boiler equipment that uses gas as the main energy source. It usually consists of a burner, a furnace, a heat exchanger, a control system, etc. Gas boilers have the advantages of high efficiency, environmental protection, safety and reliability, and are widely used in industrial, commercial and civil fields. The principle of
gas boiler is to use the high-temperature flue gas generated by gas combustion to transfer heat to water or other media through a heat exchanger to heat it to the required temperature. Gas boilers have high combustion efficiency, with thermal efficiency reaching more than 90%, and have higher energy utilization efficiency than coal-fired boilers.
In gas boiler quality appraisal cases, Zhongke Testing can provide gas boiler quality appraisal services.

can be divided into natural gas boilers, city gas boilers, coke oven gas boilers, liquefied petroleum gas boilers and biogas boilers according to fuel;
can be divided into KS-Q gas boiling water boilers, CLHS/CWNS gas hot water boilers (including gas heating boilers and gas bathing boilers), LHS/WNS gas steam boilers according to functions;
can be divided into vertical gas boilers and horizontal gas boilers according to structure.

SN/T 5277-2020 Technical requirements for imported boilers and pressure vessels Home heating and hot water gas boilers
HJ/T 287-2006 Technical requirements for environmental protection products Small and medium-sized oil and gas boilers
CJ/T 515-2018 Gas boiler flue gas condensation heat energy recovery device

A heating and cooling equipment company sold a gas steam boiler to a food company. Later, the food company refused to pay the balance of the equipment on the grounds that the nameplate model of the boiler involved was inconsistent with the contract and was shoddy. The heating and cooling equipment company believed that the configuration of the boiler equipment it provided was in line with the agreement and there was no breach of contract. Negotiations between the two parties failed, and the case was appealed to the local People's Court.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" in the gas boiler involved.
appraisal analysis results:
appraisal analysis expert group discussed and conducted comprehensive quality and technical analysis on the relevant information and on-site investigation of the gas boiler involved in the case, and made the following suggestions and conclusions:
involved boiler, boiler controller, The nameplate model of the feed water pump did not comply with the contract; after the condenser was installed, the boiler system equipment configuration complied with the equipment configuration agreement in the contract; the temperature of the flue gas discharged into the chimney by
after the condenser met the requirements in the contract schedule. The connecting flue was not insulated, causing heat loss, resulting in an increase in fuel usage.