DE3932871A1 - Heat recovery device for shower bath - has horizontal discharge pipe for warm waste water in path of entering cold water - Google Patents

Abstract

The method of recovering heat from kitchen or similary equipment particularly a shower bath uses a vessel (W) such as the foot bath of the shower to collect used water so that heat can be extracted for preheating the cold water supplied to the water heater (H). The outlet pipe (A) from the vessel travels horizontally through a chamber (B) through which passes cold water entering from the supply pipe (K). The discharged warm water travels in counterflow to the incoming cold water. USE/ADVANTAGE - Less heat is required due to heat recovery from kitchen sanitary equipment.

Description

The invention relates to a heat recovery pipe according to the counterflow principle especially for kitchen and sanitary installations, but also for everyone else Facilities where the corresponding wastewater Heat energy can be extracted to make it do so associated water of the primary circuit immediately feed again.

The invention is based, which in each wastewater contains thermal energy associated water of the primary circuit immediately bar again and thereby with a ver equally relatively inexpensive equipment recover a lot of energy.

According to the invention, the object is achieved by that the heat contained in the respective wastewater energy via a heat recovery pipe after the Countercurrent principle the associated water of the Primary circuit fed back immediately becomes. Water from the primary circuit is process water, which in its further course to wastewater is and by the wastewater mentioned below drain pipe is derived. This is what the Invention as follows:  

Made of a heat-conducting material Pipe that contains the thermal energy of the fluid flowing in it Waste water to the water of the primary circuit directs. This is achieved in that the waste water pipe from one with inflow and outflow possibilities provided pipe or corresponding container entirely or is partially surrounded such that the two Liquids are separated from each other and that the Water of the primary circuit around the sewage pipe can rinse. The direction of flow of the wastewater is opposite to that of water in the primary circuit, whereby between the two liquids on the entire length of the heat recovery pipe thermal gradient exists which is the energy return recovery rate favorably influenced.

The advantage achieved with the invention is special in that with appropriate application a relatively small amount of effort Recover energy from wastewater and to reuse them immediately without using Intermediate energy storage and / or energy conversion To suffer losses.

An embodiment of the invention is closer here and is described in the following drawing shown.

The water of the primary circuit passes through a cold water inflow K and an inflow for B called ZB into the space between the waste water drain pipe A , which is made of heat-conducting material, and the pipe or container B surrounding it, thereby washing A , flow direction opposite to the waste water flow direction and thereby taking the heat energy of Sewage. Via a drain for B called AB , the now heated water of the primary circuit reaches the water heater H , which now ensures the final temperature of use. About the water tapping point E and the water basin W , the liquid takes its course through the waste water drain pipe A , whereby in the area of the heat recovery pipe the heat energy is drawn and fed into the water of the primary circuit.

Claims (1)

Heat recovery pipe according to the countercurrent principle, in particular for kitchen and sanitary installations, characterized in that the thermal energy contained in the respective water is immediately fed back to the associated water from the primary circuit.