Mitsubishi Heavy Industries Thermal Systems, Ltd., a member of the MHI Group, unveiled the newly developed ETI‑W, a centrifugal heat pump that efficiently uses waste heat, for the Japanese market. As a key innovation in the green technology and sustainability industry, ETI‑W leverages waste heat from factory processes as its heat source, achieving a hot water output of up to 90 °C and handling capacities up to 640 kW.
This justifies its use in high-temperature applications that were conventionally handled by traditional boilers. The "ETI-W" is expected to be utilized in a wide range of applications, including processes in electronics, automotive, food, chemical, and pharmaceutical factories, as well as heating and hot water supply in commercial facilities and accommodations.
ETI‑W is energy efficient: it has a COP of 4.01 when supplying hot water at 90 °C. The compressor is a centrifugal type, based on designs from Mitsubishi’s centrifugal chillers. It is tailored for high compression and refrigerant efficiency.
It handles industrial scale loads, similar to a 1‑ton boiler, with a peak capacity of 640 kW. Even with that size, it stays compact. That’s because the inverter starter is built into the unit, and it uses a shell‑and‑tube heat exchanger, similar to the ETI‑Z series.
On the environmental front, ETI‑W uses HFO‑1233zd(E), a non‑fluorocarbon refrigerant. Its Global Warming Potential (GWP) is just 1, and it has zero ozone depletion. This gives it strong efficiency while being eco‑friendly.
With this launch, the company is lineup of industrial and commercial heat pump utilities, which includes heat recovery heat pumps as well as commercial heat pumps, and will be further expanded across a broad range of hot water supply coverages and capacities, contributing to energy savings for our customers.