The solution

Here are the most unique selling propositions of NAM technology:

• High coefficient of performance (COP) even at low outside temperatures;
• Possibility of heating water up to 176◦ F (+80◦ C);
• Low amortization;
• Fast return on investment for the user
• Ideal solution for heating sanitary water in hospitals, hotels and nursing homes;
• Only the implementation of Homecham will lead to the replacement of fossil energy sources used for heating and hot water supply.

Technological advantage

The Homecham heat pump has several key differences that place it in a fundamentally new (previously non-existent) all-season group of heat pumps capable of generating heat (for example, heating water) at any low outside air temperatures with an efficiency greater than that of an electric heating element. We approached the concept of building Homecham from the point of view of refrigeration technology (not air conditioning systems), having in our asset a proven system for increasing the efficiency of a low-temperature refrigeration system by creating a special-purpose cascade (the evaporator of the upper stage of the two-stage version is included as a subcooler, in series with the condenser, and not instead of the condenser, as is customary in the classic version) and finding an algorithm for optimizing COP by changing the subcooling temperature, depending on the evaporation and condensation temperatures of the lower stage of the cascade. The use of this concept in the heat pump gave the following advantages:

• The capacity of the upper stage of the multi-stage scheme (unlike the classic one) is approximately 1/3 of the capacity of the lower stage, which leads to a significant reduction in energy consumption and at the same time significantly increases productivity.
• The subcooling of the lower stage created by the upper stage increases the cooling capacity of the lower stage with the same power consumption
• The upper stage, operating from the waste heat of the lower stage with a temperature of about +60 °C (discarded in the classic cascade scheme), heats the water to 70-75 °C with a very high COP even at low outside temperatures, increasing the share of thermal power to 50% and higher (which increases the overall thermal performance of the system and the overall efficiency), bypassing the technical parameters of the products of all well-known companies.
• Correct distribution of heat flows in various elements of the system, transfer of “warm parts” to a closed room, use of the discovered algorithm of the system’s operation to increase efficiency makes Homecham non-competitive and the most effective way of heating water according to current sanitary standards.

Competitive advantage

• Current heat pump models cannot operate efficiently with such a temperature difference.
• They are especially unable to provide heating in winter in northern countries, as well as heat sanitary water in hospitals, hotels and residential buildings, when the difference between the outside and inside temperatures is more than 60 degrees Celsius (60◦C).
• Current heat pump models cannot replace mineral energy sources in heating water.
• Replacing existing heat pumps in cold countries with HomeCham can reduce energy costs by 45%-55%
• Replacing energy sources with HomeCam can reduce heating and domestic hot water costs by 50-75%.