110 Air-Cooled Integrated DX Units for Continuous Production in a New-Energy Equipment Plant

The challenge

A manufacturer of new-energy production equipment — the machines and lines used to build batteries, modules and other clean-energy hardware — was expanding a large single-story assembly and test workshop. The space runs long shifts, often around the clock, and its heat load is uneven: it spikes from test benches, curing ovens and welding stations, then falls away in the quiet periods between.

Three constraints shaped the equipment decision. First, there was no room for a central chilled-water plant: no dedicated plant room, no cooling tower, and no appetite for the pumping and water treatment that come with one. Second, the schedule was tight — production could not stop while the HVAC went in. Third, the client wanted all-weather reliability, so the plant could keep producing through the hottest months without tripping on high ambient temperature.

What Taile delivered

The answer was 110 air-cooled integrated direct-expansion (DX) units, each a self-contained package with its own compressor, air-cooled condenser, evaporator, fan and controls. The word "integrated" does the heavy lifting here: the entire refrigeration circuit is built, charged and sealed inside one cabinet at the factory.

That choice removed most of the field work that makes conventional systems slow and risky. There is no on-site brazing of refrigerant lines, no pressure testing, no evacuation and charging, and no chiller commissioning. Each unit leaves the factory as a closed, tested circuit, so installation comes down to mounting, electrical supply and ductwork — days per unit rather than weeks for a plant.

The 110 units are staged so that only as many as needed run at any moment. In a workshop where the heat load swings, this matters: during a lull, part of the fleet ramps down; when the ovens and test benches fire up, the next units stage in. Staging also keeps each unit running near its efficient point instead of cycling one large machine on and off.

Why integrated DX units fit continuous production

For a single-story workshop with a moderate, distributed heat load, a packaged DX approach usually beats a central chilled-water plant on three measures: first cost, installation time and operational simplicity.

First cost. A chilled-water plant needs chillers, pumps, a cooling tower, water treatment and a pipe network. A packaged DX unit carries only its own refrigeration circuit. At this load size, the capital gap is real.

Installation time. Because the circuit is factory-sealed, the site work is mostly mounting, power and ducting. That let the HVAC track the workshop's own construction schedule instead of holding it up.

Operational simplicity. There is no cooling-tower water chemistry to manage, no chilled-water balancing across a long pipe run, and no single point of failure. If one of 110 units trips, the rest keep the space conditioned, and the failed unit can be serviced or swapped without stopping production.

The trade-offs are real, and we spell them out rather than hide them. For very large, dense loads — a multi-story cleanroom or a data hall — a chilled-water plant still wins on part-load efficiency and redundancy economics. Air-cooled units also run a higher condensing temperature in extreme heat, so high-ambient design (larger condenser coils, upgraded condenser fans, compressor high-pressure protection) has to be specified up front, not assumed.

Three decisions that mattered most

1. Specify for peak ambient, not design-average. Air-cooled condensing capacity falls as outdoor temperature rises. We sized condensers and selected compressors for the worst-month ambient, so units keep holding temperature when it is hottest.
2. Stage the fleet instead of running all units flat. Staging cuts energy in the lulls and reduces compressor cycling, which is what shortens compressor life in DX equipment.
3. Keep the refrigerant circuit factory-sealed. Every field joint is a future leak. Minimizing on-site refrigerant work is not just faster; it measurably lowers the long-term leak and service burden.

Key figures

• 110 air-cooled integrated DX units for a single new-energy equipment workshop
• Factory-charged, sealed refrigerant circuits — no on-site brazing, testing or charging
• Staged operation to match a swinging production heat load
• High-ambient design for all-weather continuous production