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Home
  • Products

    Actuators

    • Actuator Sizing and Selection
    • Non Fail-Safe Actuators
    • Fail-Safe Actuators
    • Actuators for Harsh Environmental Conditions
    • Fast Running Actuators
    • Linear Actuators
    • Fire Damper Actuators
    • Smoke Control Damper Actuators
    • Variable Air Volume
    • Valve Actuators

    Valves

    • Valve Sizing and Selection
    • Belimo Energy Valve™
    • Pressure Independent Control Valves
    • Zone Valves
    • Characterised Control Valves
    • Ball Valves
    • Butterfly Valves
    • Globe Valves
    • Potable Water Valves
    • Refrigeration Valves
    • Valve Actuators

    Sensors / Meters

    • Sensors/Meters Selection
    • Duct Sensors (Air)
    • Pipe Sensors (Water)
    • Outdoor Sensors (Air)
    • Room Units
    • Thermal Energy Meters (TEM)
    • Belimo Energy Valve™ with TEM

    Systems

    • Belimo Energy Valve™
    • Room Solutions
    • Bus & System Integration
    • Fire & Smoke
    • Energy Manifold
    • Belimo ZoneEase™ VAV

    RetroFIT+

    • RetroFIT+ Product Replacement Tool
    • Make the Most Out of It
    • Upgrade Your System
    • Start with Minimal Effort
    • RetroFIT+ Zamenski proizvodi
    • RetroFIT+ Partner

    Applications

    • Data Centre Cooling Aplications
    • Air Handling Units (AHUs)
    • Room and Zone Applications
  • Support

    Services

    • Actuator Sizing and Selection
    • Valve Sizing and Selection
    • Sensors/Meters Selection
    • RetroFIT+ Product Replacement Tool
    • Tender Texts
    • Customer-specific products
    • Download Center
    • Service Tools / Apps
    • Software / Plug-ins / CAD
    • File Archive (Bus & System Integration)
    • Product and Price Catalogue / Datanorm
    • General Conditions of Sales and Delivery
    • Belimo Cloud: Login / Register
    • Thermal energy meter activation
    • Videos

    Belimo Education

    • Belimo Experience Centre (Vienna, Austria)
    • Belimo Experience Center (Hinwil, Switzerland)
    • Belimo Experience Center (Großröhrsdorf, Germany)
    • Company Tour (Hinwil, Switzerland)
    • Webinars
    • Training

    Applications

    • Data Centre Cooling Aplications
    • Air Handling Units (AHUs)
    • Room and Zone Applications
  • About Us

    Belimo

    • Profile
    • Our Values
    • Sustainability
    • History
    • Awards & Recognitions
    • Suppliers
    • Affiliated Organisations
    • Quality @ Belimo

    Jobs & Careers

    • Jobs
    • Culture@BELIMO
    • Benefits
    • Recruitment process
    • Careers
    Navigation_Teaser_1

    Investor Relations

    • Key Figure Comparison
    • Reports and Presentations
    • Ad hoc and Corporate News
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  • Contact Us
  • Discontinued Products
  • Stavke u vašoj mapi za preuzimanje

    Mapa za preuzimanje je prazna
    Stavka/stavke u mapi za preuzimanje

    !

    Pogledaj mapu za preuzimanje
    Idite u centar za preuzimanje
  • Artikli u vašoj košarici

    Košarica je prazna.
    artikl/artikla u košarici

    Solution

    Količina:
    Ukupno:
    Pogledaj košaricu / popis projekata
    Otvori drugi popis projekata
    Izvezi kao datoteku u formatu .xlsx Izvezi kao datoteku u formatu .csv Uvezi iz datoteke u formatu .csv Uvezi iz datoteke u formatu .bel
belimo_9-Chiller-Heatpump-Monitoring_1920x350px_v1

Chiller / Heat Pump Monitoring

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  2. Belimo Energy Valve™ and Thermal Energy Meter
  3. HVAC Applications

What is a Chiller / Heat Pump?

Chillers and heat pumps come in a huge variety of shapes and sizes, using different technology to achieve the same outcome for the exchange of energy.

The efficiency of this process is measured by the ratio of usable energy (media water, water/glycol or air) to the energy used (typically electricity). Both measures have units of BTU/(h·W) (1 BTU/(h·W) = 0.293 W/W).

Monitoring water supply temperature, flow rate and water return temperature is an important part of the process. The first step in improving chiller operating efficiency is to calculate current conditions (produced energy/consumed electricity), known as COP.

COP = COOLING POWER / INPUT POWER 

 

Schematic

There is not one generic schematic valid for all kinds of chiller or heat pump piping. The schematic shows an Energy Valve fitted to monitor flow and delta T through a chiller.

However, they all have one thing in common; their maximum achievable power depends on the volume flow x delta T. Too small delta T limits the output of the plant. Often in low delta T situations, more machines are running than are actually required, as there capacity is limited.

The Belimo Energy Valve™ is a great product to create transparency and ensure correct long-time operation. Belimo do not recommend the correction of delta T issues at the plant. Implementation of any type of control here may starve some units and not deal with others, which are creating the issue.

chiller-heat-pumb-schematic


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Total Cost of Ownership (TCO)

Often, the symptoms of low delta T is presented as a lack of capacity from the plant during peak periods. This naturally leads to the instinct to increase the capacity. Using the Energy Valve to diagnose and actively correct low delta T at the heat exchangers, can prevent the need to upgrade entirely.

Common Issues with Chillers and Heat Pumps and Why You Should Choose the Belimo Energy Valve™

chiller-heat-pumb-monitoring-ev-integrated-energy-data-logging

Problem: Ongoing monitoring of chiller performance

In older chillers, it is difficult to monitor thermal output. Ideally, we want this to compare against the power consumed for a true COP. Historical benchmarking has become increasingly important in recent time. The capability to measure performance against this time last year or against a time with similar conditions, enhances informed decisions on maintenance and replacement.

Solution: Use the Energy Valve built-in energy meter

By monitoring the flow rate, along with entering and leaving water temperatures, you can build a good picture of how well your chiller is performing thermally, and with the addition of an electrical consumption meter, you can obtain the whole picture or coeffi cient of performance (COP). Even if your chiller already offers real time output data, the Energy Valve is able to monitor and log this data for 13 months and provides a useful backup if the on-board feature fails.

chiller-heat-pumb-monitoring-pipework-failure-glycol

Problem: Ongoing monitoring of chiller performance

In older chillers, it is difficult to monitor thermal output. Ideally, we want this to compare against the power consumed for a true COP. Historical benchmarking has become increasingly important in recent time. The capability to measure performance against this time last year or against a time with similar conditions, enhances informed decisions on maintenance and replacement.

Solution: Use the Energy Valve built-in energy meter

By monitoring the flow rate, along with entering and leaving water temperatures, you can build a good picture of how well your chiller is performing thermally, and with the addition of an electrical consumption meter, you can obtain the whole picture or coeffi cient of performance (COP). Even if your chiller already offers real time output data, the Energy Valve is able to monitor and log this data for 13 months and provides a useful backup if the on-board feature fails.

Success Story - University of Miami

University of Miami The Belimo Energy Valve™ Cures Medical University's Low-Delta-T

The University of Miami medical campus saves thousands of dollars and increased plant capacity with the Belimo Energy Valve retrofit.

  • Reference – University of Miami, USA (pdf - 341 KB)
university_of_miami

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The Belimo Energy Valve™ in other HVAC Applications

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