The energy efficiency of household appliances depends mostly on the properties of the thermal insulation solution used. The main challenge is how to increase performance levels without compromising the internal dimensions or changing the standard sizes.
The thermal conductivity of VIPs is around 7 times smaller than bulky PU foam insulation. VIPs represent a remarkable solution to increase the efficiency level of appliances as well as the useable internal volume, without the need for extensive constraints or modifications to the structural or external design. In addition, VIPs can contribute to solving sweating problems in areas where there is no room for a thick insulation layer.
As a result of continued R&D on core materials and envelopes, VIP technology has contributed extraordinarily to the increased efficiency of household and commercial appliances. For appliance applications, properties such as pressure increase (mbar/year), moisture accumulation (as a percent of mass per year) and thermal conductivity (W/m-K) are well understood and predictable. Failure risks are very low and panels are very durable. They can be expected to maintain a low thermal conductivity for 25 years or more, making them ideally suited for appliance applications.
Through the use of VIPs, household and commercial fridges qualify for superior energy ratings (from U.S. Energy Star or European A+++) effectively and economically.
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