The hydraulic layout depends on technical criteria as the difference between leaving and return temperatures (ΔT) and STL strategies used (operating modes),...and economic criteria as investment and operating costs optimization. Below are 4 basic hydraulic layouts used for air-conditioning installation and industrial refrigeration. We choose and adapt the hydraulic system during the engineering phase to meet the needs of our customers.
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The parallel layout with a 3-way valve gives a great flexibility while piloting the installation.
The variable flow layout limits the pumps consumption and increases the energy efficiency of the installation.
The downstream or upstream series layout allows to operate with a high ΔT and to give priority on both operatings and investment costs savings.