Le terme «conception directe» désigne notamment les systèmes air-air, eau-air, saumure-air; le terme «conception indirecte» désigne notamment les systèmes air-eau, eau-eau, saumure-eau, y compris les pompes à chaleur à eau chaude.
The term ‘direct design’ refers in particular to air-to-air, water-to-air, brine-to-air systems; the term ‘indirect design’ in particular to air-to-water, water-to-water, brine-to-water systems, including hydronic heat-pumps.
