CO₂ Chats | What is the critical point of CO₂?
Emerson’s Andre Patenaude, director – solutions strategy, answers this question and what it looks like when a system operates above and below the critical point (87.8 degrees Fahrenheit).
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and what it looks like when a system operates above and below the critical point (87.8 degrees Fahrenheit).
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and where these pressures occur in a system to give contractors a level of comfort.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and shares how this affects saturation pressure in a system.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and discusses the importance of understanding the triple point pressure of CO₂ and how to effectively charge a system.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and what actions or mitigation strategies should be put in place depending on how long the system shutdown takes place.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and shares how pulse width modulated valves, stepper valves and case controls are used to prevent flood back.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and discusses the importance of first understanding local building codes for storing CO₂ refrigerant.
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Emerson’s Derek Langenkamp, product manager, answers this question and shares the importance of a leak detector to detect the colorless and odorless CO₂ refrigerant.
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Emerson’s Derek Langenkamp, product manager, answers this question and how liquid can get trapped between valves which then prompts the need for the system to be fitted for pressure relief valves.
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Emerson’s Derek Langenkamp, product manager, answers this question and breaks down the unique performance and operating characteristics of CO₂ refrigerant that dictate system design.
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Emerson’s Andre Patenaude, director – solutions strategy, discusses how the low-temp compressors discharge into the medium-temp compressors which boost into the gas chamber.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and describes the two stages within a cascade system – high stage and low stage – and what refrigerants are used in both
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Emerson’s Andre Patenaude, director – solutions strategy, discusses how the pre-adiabatic cooling pads and coils from the condenser help the CO₂ system operate more efficiently at lower pressures.
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Emerson’s Andre Patenaude, director – solutions strategy, shares how energy efficiency is dependent upon many factors: ambient, humidity, availability of water, cost of water and peak demand charges.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and discusses how there is an additional suction group with an extra parallel compressor added to the rack.
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Emerson’s Andre Patenaude, director – solutions strategy, answers this question and shares that CO₂ is a great refrigerant to use for heat reclaim and gives examples of using it in various scenarios.
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Emerson’s Andre Patenaude, director – solutions strategy, describes the importance of the gas cooler, high-pressure valve and flash tank being set up correctly from the start to manage CO₂ systems.
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Emerson’s Andre Patenaude, director – solutions strategy, shares that at every single gas outlet temperature, the pressure can be adjusted to find the most efficient coefficient of performance.
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Emerson’s Andre Patenaude, director – solutions strategy, describes when a system is above the critical point (87.8 degrees F), it’s in transcritical mode – when below, it's in subcritical mode.
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Emerson’s Derek Langenkamp, product manager, answers this question and shares the importance of having the right training and equipment to safely handle this refrigerant.
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