All fuel-burning furnaces have a primary heat exchanger. But high-efficiency gas furnaces also have a secondary one, which typically consists of an array of metal tubes. Hot air from the primary ...

Billions of heat exchangers are in use around the world. These devices, whose purpose is to transfer heat between fluids, are ...

Why not get the most for you clothes drying dollar by sourcing that hot air to warm your house. The block you see on top of the dryer is a heat exchanger. The exhaust from the dryer passes through ...

Heat exchangers are everywhere—in air conditioners, refrigerators, cars, airplanes, data centers, and even in your phone.

“Our new heat pumps operate down to -20 C of outdoor air, providing hot water of 75 C at 0 C of ... It also uses a water-side brazed plate heat exchanger and an electronic expansion valve.