Method for recovering heat in a vapor degreasing apparatus

Patent · Tue Jul 01 00:00:00 EDT 1980

OSTI ID:5033653

Grunewald, H; Moree, H

A description os given of a method of heat control in a solvent vapor degreasing apparatus, said apparatus comprising a tank containing a liquid solvent high in the bottom thereof, and with a solvent vapor zone for degreasing objects above said liquid solvent bath, said method comprising the steps of: A. heating the bottom of said tank for heating said liquid to be continuously at the boiling point, thereby generating vapor from said liquid solvent bath; B. cooling a region defined by a cooling coil at least partially surrounded the inside of said tank at a level above said solvent vapor zone; C. recovering the vapor in a liquid form from said cooling region and returning a first portion of the recovered liquid to said liquid solvent bath and diverting a second portion of the recovered liquid into said cooling coil of a heat pump means; D. supplying heat absorbed by said cooling coil in said cooling region from said solvent vapor to a circulating heatcarrying medium of a system including said heat pump means, in which the medium is vaporized and thereafter is compressed and discharging the vaporized and compressed medium at high temperature and pressure directly into the liquid solvent bath, said heat-carrying medium including said second portion of said recovered liquid solvent; and E. supplying extra energy from outside the system including the heat pump means for operation of said system and cooling away excess heat outside the degreasing apparatus for balancing said system.

• Assignee: Electrokemiska AB (Sweden)
• Patent Number(s): US 4210461
• OSTI ID: 5033653
• Resource Relation: Patent Priority Date: Priority date 2 Jun 1975, Sweden
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
HEAT PUMPS
HEAT TRANSFER FLUIDS
USES
HEAT RECOVERY EQUIPMENT
DESIGN
CHLORINATED ALIPHATIC HYDROCARBONS
CLEANING
EVAPORATION
GREASES
SOLVENTS
TEMPERATURE CONTROL
VAPOR CONDENSATION
CONTROL
EQUIPMENT
FLUIDS
HALOGENATED ALIPHATIC HYDROCARBONS
LUBRICANTS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHASE TRANSFORMATIONS
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization
420400 - Engineering- Heat Transfer & Fluid Flow