A system for desuperheating hot gaseous refrigerant using both a heat exchanger and a dispersed Venturi-driven injection of liquid refrigerant is disclosed. Further, a system, relating to cooling at least one compressed superheated refrigerant fluid prior to condensing, relating to extending the life of at least one condenser is disclosed.

A system for desuperheating hot gaseous refrigerant using both a heat exchanger and a dispersed Venturi-driven injection of liquid refrigerant is disclosed. Further, a system, relating to cooling at least one compressed superheated refrigerant fluid prior to condensing, relating to extending the life of at least one condenser is disclosed.

A system for desuperheating hot gaseous refrigerant using both a heat exchanger and a dispersed Venturi-driven injection of liquid refrigerant is disclosed. Further, a system, relating to cooling at least one compressed superheated refrigerant fluid prior to condensing, relating to extending the life of at least one condenser is disclosed.

A system for desuperheating hot gaseous refrigerant using both a heat exchanger and a dispersed Venturi-driven injection of liquid refrigerant is disclosed. Further, a system, relating to cooling at least one compressed superheated refrigerant fluid prior to condensing, relating to extending the life of at least one condenser is disclosed.

A heat exchanger system, for transferring waste heat from a stream of exhaust air produced in a dryer to a stream of fresh air directed to flow into the dryer, including a retriever, or retriever, comprising an array of a plurality of substantially mutually parallel, substantially vertical heat-transfer conduits having square cross-sections arrayed in alternating staggered rows relative to a perpendicular to the general direction of the flow of the stream of fresh air into the dryer, wherein each heat-transfer conduit is oriented to have one corner facing in the general direction of the flow of the stream of fresh air into the dryer. Associated structure for housing the retriever, supporting it in the flow of fresh air, and directing dryer exhaust air into the heat-transfer conduits is also included. The heat exchanger system is adaptable to a wide variety of dryers, and may be built-in.

An improved system for transferring heat, utilizing diols, specifically 1,3-propanediol (PDO). The system reduces the energy consumption, maintenance costs, corrosion, toxicity, and the risk of fire associated with such heat-dependent processes. Unlike traditional hydrocarbon heating fluids, diols do not require draining and replacement if a purifier is installed in the system. Business methods are also disclosed.

An improved system for transferring heat, utilizing diols, specifically 1,3-propanediol (PDO). The system reduces the energy consumption, maintenance costs, corrosion, toxicity, and the risk of fire associated with such heat-dependent processes. Unlike traditional hydrocarbon heating fluids, diols do not require draining and replacement if a purifier is installed in the system. Business methods are also disclosed.

A heat exchanger system, for transferring waste heat from a stream of exhaust air produced in a dryer to a stream of fresh air directed to flow into the dryer, including a retriever, or retriever, comprising an array of a plurality of substantially mutually parallel, substantially vertical heat-transfer conduits having square cross-sections arrayed in alternating staggered rows relative to a perpendicular to the general direction of the flow of the stream of fresh air into the dryer, wherein each heat-transfer conduit is oriented to have one corner facing in the general direction of the flow of the stream of fresh air into the dryer. Associated structure for housing the retriever, supporting it in the flow of fresh air, and directing dryer exhaust air into the heat-transfer conduits is also included. The heat exchanger system is adaptable to a wide variety of dryers, and may be built-in.

A cooling system, for cooling the contents of a utensil, utilizing a removable, reusable, refillable, freezable toroidal-shaped cooling insert and a toroidal-shaped insulator. The cooling insert and insulator stack in a nested manner within the utensil to provide improved insulating and longer cooling of the utensil contents. Furthermore, a secured bottom holder removably holds the cooling insert and insulator within the utensil. The cooling system includes the use of a temperature sensor and display which provides a visual indicator when the contents have reached a temperature indicating the contents are no longer being properly cooled. Such utensils may include, for example, dog dishes, bait containers and food containers.

A system for transferring ambient air from an interior of a house to a pet enclosure external of the house, thus allowing for the pet enclosure to receive cooled or heated air approximating the temperature of the house. An electric fan housed in a preformed enclosure is installable in, or on, the house exterior wall. An air conduit between the fan and pet enclosure is preferably provided by a flexible rubber transfer duct which may vary in length. Conduit connections at the house and at the pet enclosure use a gasket/flange sealing system. A damper to avoid backflow of air is provided near the fan. And a protective cover at the pet enclosure limits access from the pet enclosure to the conduit. An end cap to protect the house when the duct is not in use is also shown.