HVAC Efficiency Testing for Humidity and Temperature Control



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Modern air conditioning and climate control systems are used in a wide range of environmental conditions across the world. The primary purpose of these systems is to maintain thermal comfort by regulating indoor air temperature and humidity. To maintain air quality, fresh outside air is continuously drawn into the HVAC system and conditioned before being circulated indoors. However, due to varying local climates, outside temperatures could be anywhere between -50 & +50°C, with humidity levels between -30 and +30°C dew point.

Designing a system with satisfactory performance across such a wide range of conditions is a challenge, therefore HVAC systems need to be properly set up, and subject to a rigorous testing regime before sale. The purpose of this testing is not only to evaluate the performance of the systems temperature and humidity control, but to ensure the system is energy efficient, filled with the correct level of refrigerants and is not subject to any leaks or problems with drainage.

HVAC System Testing

To ensure product quality; each system is tested in a variety of environmental conditions to ensure that the following parameters are within acceptable limits at the outlet:

  • Air flow
  • Temperature
  • Pressure
  • Humidity
  • The purposes of the tests are to validate the performance and efficiency of the system, and to determine the required fill level of refrigerant gas. Each manufacturer will operate multiple test rigs, which consist of a pair of environmentally controlled chambers: one to simulate conditions outdoors, and another to simulate conditions indoors.

    Why is humidity measurement of HVAC important?

    Accuracy of dew point measurement at the inlet and outlet of the unit under test is crucial, as the closer to the true value the measurement is; the more precisely the refrigerant fill level of the condenser can be calculated.

    Related Products

    Handheld Humidity Meter - Rotronic Hygropalm HP-GTS
    Handheld Humidity Meter - Rotronic Hygropalm HP-GTS
    Fixed sword probe for measurements in stacks

    Datalogging

  • Paper Industry
  • Textile Industry
  • Pulp mills, Paper and Wood mills
  • Industrial Grade Chilled Mirror Hygrometer - Michell Optidew
    Industrial Grade Chilled Mirror Hygrometer - Michell Optidew
    New chilled mirror hybrid sensor gives fast dynamic response to changes in humidity

    Accurate to ±0.15°C dew point, ±0.1°C temperature

    Wide measurement range from -40 to +120°C dew point
    Chilled Mirror Hygrometer - Michell S8000 Remote
    Chilled Mirror Hygrometer - Michell S8000 Remote
    Fundamental, accurate and low-drift measurement

    Remote sensor

    Open design allows remote sensor to be mounted into a sample flow or simply placed in an environment to be monitored
    Precision & Performance Humidity and Temperature Transmitter - Rotronic HF5
    Precision & Performance Humidity and Temperature Transmitter - Rotronic HF5
    One interchangeable HC2A probe

    Range of application electronics -40…60 °C / 0…100 %rh

    Easy and fast validation through simulator modus
    Advanced Humidity and Temperature Transmitter - Rotronic HF4
    Advanced Humidity and Temperature Transmitter - Rotronic HF4
    Range of application up to -50…100 °C / 0…100 %RH

    Accuracy: Up to ±1 %RH, ±0.2 K, at 23 °C

    GAMP compliant (HygroSoft Software)
    Precision & Performance Humidity and Temperature Transmitter – Rotronic HF5A advanced
    Precision & Performance Humidity and Temperature Transmitter – Rotronic HF5A advanced
    One interchangeable Probe slot

    Range of Application up to -40…70 °C / 0…100 %RH

    Equipped with a passive NFC-antenna for fast configuration
    Handheld Humidity Meter - Rotronic Hygropalm HP31
    Handheld Humidity Meter - Rotronic Hygropalm HP31
    Fixed probe

    Datalogging

  • Field inspection and spot checks in HVAC
  • Building Management systems
  • Agriculture and Food Industry
  • Handheld Humidity Meter - Rotronic Hygropalm HP32
    Handheld Humidity Meter - Rotronic Hygropalm HP32
    Wide selection of probes for different application

    Datalogging

  • Field inspection and spot checks in demanding Processes
  • Pharma & Food & Cosmetic Industry
  • High temperature Applications
  • Standard Humidity and Temperature Transmitter - Rotronic HF3
    Standard Humidity and Temperature Transmitter - Rotronic HF3
    Range of application up to -40…60 °C / 0…100 %RH

    Accuracy: Up to ±1.5 %RH, ±0.2 K, at 23 °C

    GAMP compliant (HygroSoft Software)
    OEM Probe Temperature and Humidity - Rotronic XD
    OEM Probe Temperature and Humidity - Rotronic XD
    Accuracy ± 0.8 %rh / ±0.2 K at 23 °C

    Range of applications electronics. -40…85 °C / 0…100 %rh

    Supply voltage range from 5…24 VDC and freely scalable outputs
    OEM Module Temperature and Humidity - Rotronic HC2-ROPCB/01
    OEM Module Temperature and Humidity - Rotronic HC2-ROPCB/01
    Accuracy ± 0.8 %rh / ±0.1 K at 23 °C

    Range of applications electronics. -50…100 °C / 0…100 %rh

    Adjusted at 23 °C and 10, 35, 80 %rh
    Robust Outdoor Transmitter - Rotronic HFM53
    Robust Outdoor Transmitter - Rotronic HFM53
    Interchangeable HC2 probes

    Range of Application up to -40…60 °C / 0…100 %RH

    Robust housing

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