Heat pump + solar thermal = SolaroPAC Technique-Innovation

Batirama.com 25/05/20210

Heat pumps whose cold source consists of low-temperature solar thermal collectors are developed by several French manufacturers and achieve high yields.

There are several technologies for combining heat pumps and solar energy. The first, very classic, is the Pac in relief of thermal solar collectors. This is particularly the technology deployed in the context of Individual Solar Water Heaters (CESI), when they consist of a heat pump and thermal sensors.

The second possibility is to supply the heat pump with self-consumption photovoltaic solar panels. The third technology uses low-temperature solar thermal collectors as the heat pump evaporator. The fourth solution combines thermal sensors such as evaporators and self-consumption photovoltaic sensors to power the heat pump.

The second and fourth possibilities are explored in particular by the European program SunHorizon. We have already talked about that. Evaluated in SunHorizon, the combination of Pac air/water or thermodynamic air/water water heaters from BDR-Thermea with hybrid sensors (thermal + photovoltaic) from French DualSun gives excellent results. New elements will feed a future article on this theme.

In this article, here is a presentation of the third technology. Called SolaroPAC, it uses low temperature solar collectors as evaporators.

SolaroPAC: an already proven technology

The use of low temperature solar collectors as heat pump evaporators is already old. Two French brands, Giordano Industries and Heliopac, have been developing this solution for over 20 years. For Giordano Industries, this is its Solar Pump offer.

While Heliopac has several solutions: heliopacsystem based on low temperature thermal sensors, heliopacsystem+ which uses DualSun hybrid panels and uses both their heat and their PV electricity production for self-consumption.

ENERPLAN, the union of solar energy professionals, has launched a working group with the aim of having SolaroPACs recognized by the Solar Fund, managed by Ademe, and making them accessible to financing by EEC. Enerplan is also working to include the SolaroPAC solution directly in the RE2020 calculation engine.

Solar Pump + Polytub 4N at Giordono Industries

Giordano Industries has therefore developed the Solar Pump, a brine / water heat pump, capable of producing DHW in large quantities and water for heating. Combined with Polytub 4N solar collectors, also developed by Giordano Industries, the system is capable of producing heat at 65°C in all geographical areas, down to an outdoor temperature of -10°C. The Solar Pumps can therefore produce DHW all year round, without electrical back-up by the Joule effect, in most regions.

These machines can also be used in a 4-pipe version to produce chilled water that can be used for cooling. For the moment, the Pac Solar Pumps operate with R404A. A new machine will be marketed from 2022 and will use propane R290 (GWP = 3), a natural fluid, not subject to European F-Gas regulations.

All the machines are now connected, either to the building's BMS via an RJ45 socket, or via a Sigfox or Lora type wireless link. Giordano Industries remotely monitors the operating parameters of its machines and relays any malfunctions to the Client or the maintenance company.

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— Готовим вместе с ARNATO Fri Oct 23 06:43:04 +0000 2020