Heat-pump dryer, 20 kW class
by HVAC Builder
Open this system in HVAC Builder Load it into the 3D builder, adjust it to your project, and solve it against your own climate — or drop it into a building model and simulate a full year.
A closed-loop heat-pump dryer: a DX coil that takes the water out of the drying chamber's own 55 °C air, the condenser in the same stream reheating it, a circulation fan — on a Copeland ZWD81KBC digital scroll (R134a, rated to 85 °C condensing) with its 10–100 % modulation declared. Nothing leaves but condensate. Run humidity-led in a building: steered on the chamber's humidity ceiling alone. Published as an example; the figures below are solved from this model.
Example14–26 kW heating + coolingEUExample system. Published by HVAC Builder to show suppliers what their own page looks like. There is no company behind it and it is not a product offer — the specification is generic and the performance is solved from the model on this page.
Design-point performance
Solved from this example's own model as it is published — the same numbers a supplier's page shows for their machine.
Component schedule
| Component | Kind | Duty |
|---|---|---|
| Intake (face and bypass) | Damper | 0.0 kW |
| Drying DX coil (chamber air) | DX evaporator | 22.0 kW |
| Reheat condenser (in the supply) | Condenser | -29.0 kW |
| Circulation fan | Fan | -0.7 kW |
| ZWD81KBC digital scroll | Compressor | 7.3 kW |
Heat-pump rating
No refrigerant circuit in this machine is declared cooling-only, and none condenses in an evaporative condenser, so it is also rated as a heat pump. Solved with the circuit running backwards at the standard air-to-air heating rating point — outdoor 7 °C dry bulb / 6 °C wet bulb, indoor 20 / 15 °C (EN 14511) — not at the supplier's own design conditions above, so the two ratings can be compared across machines.
Are you a manufacturer?
Publish your own range and this slot becomes your branded page — your data, your logo, your product link, and quote requests that reach you. Free to register and free to publish.