With the gradual promotion of the ship energy conservation and emission reduction, the electric ships become more and more popular with ship owners. As one of the prevailing energy sources for electric ships, lithium iron phosphate battery has special requirements for its storage space environment. A design method for the environmental control of LiFePO ₄ battery tank is proposed through the interpretation and analysis of the specification requirements of the classification societies. It also carries out the ventilation calculation and system configuration of a small electric ship.

The domestic small inland ship has become a new business growth point for the shipbuilding industry under the background of the continuous shrinking of the large and the medium ship market. A design idea different from those of the large and medium sea-going vessels has been proposed for the air-conditioning system of the small inland ships.The modular unit of the water source heat pump is applied with the VRV multi-split air conditioning system and the total heat exchange fresh air system.While ensuring the indoor temperature and humidity and the demand of fresh air for personnel, the system control level and the human comfort are improved together with the advantages of energy saving, weight reduction, space saving, safety redundancy and convenient expansion.