Heat pump wire

Warm pump line – are you referring to the bypass next to the check valve at the outlet of the chiller pump? And what about the bypass next to the check valve at the outlet of the recirculation pump in your post just now?

1. The main function of the warm-up pump circuit is to keep the fluid inside the standby pump in motion, thereby preventing freezing during winter. 2. When transporting relatively hot fluids, so that the standby pump can be put into use at any time, it is necessary to use pipes connected to the working pump to warm up the standby pump. To ensure it can start properly without any problems, it is usually preheated to a temperature close to that of the fluid

Heating pump wire for use in heating pumps: 1. Wires of this type are generally used for transporting high-temperature fluids; our company uses them for temperatures of 120+ degrees as well. The purpose is to prevent high-temperature fluids from entering, which could cause the various components inside the pump to heat up too rapidly, leading to loosening and detachment. A large temperature difference between the inside and outside of these components generates thermal stress, resulting in damage and deformation. 2. It can also prevent freezing and cold in winter. 3. This circuit is activated when the pump is turned off, thereby maintaining a continuous warm flow in the pump ； It is turned off before starting the pump in order to prevent cavitation (there is a flow control orifice on the pump’s supply line, which serves to prevent the pump from running in reverse at low flow rates). When the pump starts operating, the pressure is high and the fluid temperature is high; as the fluid passes through the orifice plate, throttling occurs, which increases the flow rate and reduces the pressure. Vaporization may take place, resulting in the formation of bubbles – this is known as cavitation. The pipes vibrate violently, leading to fluctuations in flow rate and loosening of the pipelines. Therefore, the standby pump starts under interlock, and the on-site operator immediately goes to shut down the heating pump line