Boilers in hotels and hotels are mainly used for heating and hot water supply. Some hotels also need to supply laundry and kitchen steam. Traditional Hotel boiler configuration: steam boiler or hot water boiler. Heating is provided by plate heat exchanger and hot water is supplied by volume heat exchanger. This configuration of hotel boilers is achieved by secondary heat transfer, which will cause heat loss and waste a lot of energy consumption in the process of heat transfer. Steam boilers have a great impact on hotel operation and reputation. Apart from the guest room environment, the most direct feeling of hotel customers is whether hot water is good or not. For example, the amount of water is not large enough, whether hot water is cold or hot. If this service is not in place, it is likely to lose customers.