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Equipment Technology Rental

ETR — Equipment Technology Rental

How Temporary Cooling Loads Are Estimated for Event Tents

A tent cannot be sized for cooling from floor area alone. Temporary structures can change quickly with weather, occupancy, open entrances and operating schedules, so the estimate must make its assumptions visible.

1. Define the tent and operating period

  • Record the tent dimensions, height, orientation, fabric type and available information about insulation or liners.
  • Confirm the location, dates, occupied hours and whether the event includes setup, rehearsal or daytime operation.
  • Identify shaded and sun-exposed surfaces and any adjacent heat sources.

2. Account for outdoor and envelope heat gain

  • Use appropriate outdoor design conditions for the location and event period rather than a generic annual temperature.
  • Envelope heat transfer depends on surface area, construction and the indoor-to-outdoor temperature difference.
  • Solar gain can be important for exposed temporary structures and should not be hidden inside a simple area allowance.

3. Add people, lighting and equipment

  • Occupancy affects both sensible and latent load; use the expected occupied count and activity instead of the venue maximum without context.
  • Lighting, catering, audiovisual equipment and other powered equipment add heat to the space.
  • Document diversity and operating schedules so loads are not assumed to peak simultaneously without evidence.

4. Treat infiltration and ventilation explicitly

  • Frequently opened doors and open tent edges can introduce substantial warm, humid outdoor air.
  • Required outdoor air and exhaust must be coordinated with the cooling and air-distribution plan.
  • Air leakage assumptions should reflect the real entrance strategy, not a sealed permanent-building model.

5. Plan distribution and operating controls

  • Cooling capacity is useful only when conditioned air reaches occupied zones without creating short-circuit paths.
  • Supply locations, return paths, fabric ducts or other distribution, zoning and standby arrangements should be reviewed.
  • Commissioning checks should confirm airflow, controls and site interfaces; field readings describe conditions at a time and are not a universal performance commitment.

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