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Air Conditioning Basics: Refrigeration Cycle and p-h Diagram

Air Conditioning Basics: Refrigeration Cycle and p-h Diagram

The advantage of using an economizer for gas-liquid separation after depressurization is that it can reduce power consumption!

Air conditioning equipment such as air conditioners and turbo refrigeration units generates cold water or air by repeating four processes known as the refrigeration cycle. In this column, we will explain the p-h diagram, which illustrates the state of the refrigerant during each process on a single line diagram, allowing us to understand the conditions and values of each component and apply this knowledge to the design and operation of refrigeration units. Please take a moment to read it. [Contents] ■ What can be understood from the p-h diagram ■ p-h diagram for single-stage compression ■ p-h diagram for multi-stage compression *For detailed content of the article, please refer to the related links. *For more information, please check the PDF materials or feel free to contact us.

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What causes the carbon dioxide emitted from buildings?

What causes the carbon dioxide emitted from buildings?

A solid foundation for paving the way to decarbonization! Introduction of useful air conditioning information.

Carbon emissions (or carbon production) refer to a general measurement of the amount of CO2 generated directly, indirectly, or through the value chain. On the other hand, the carbon footprint represents the total impact of an organization, expressed as the sum of all carbon emissions. While these terms are sometimes used interchangeably, it is important to understand the differences between them. Specific actions at the operational level have a significant impact on the carbon footprint, making the total carbon emissions the most important factor for decision-makers in buildings and facilities. [Contents] ■ Scope 1 "Direct" emissions ■ Scope 2 "Indirect" emissions ■ Summary *For detailed content of the article, please refer to the related links. *For more information, please refer to the PDF materials or feel free to contact us.

  • air conditioning
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The Fluorocarbon Emission Control Law is set to be revised, with consideration for strengthening penalties.

The Fluorocarbon Emission Control Law is set to be revised, with consideration for strengthening penalties.

Considering the strengthening of regulations from four perspectives! Introducing the background of regulatory enhancement and what lies ahead.

On January 16, 2019, the Ministry of the Environment and the Ministry of Economy, Trade and Industry solidified their policy to strengthen regulations on alternative refrigerants under the Fluorocarbon Emission Control Law. According to survey results compiled by the Ministry of the Environment in December 2018, it was revealed that 63% of alternative refrigerants used in equipment such as air conditioners and refrigerators are disposed of without being recovered at the time of equipment disposal. The Ministry of the Environment has begun considering imposing stricter penalties on businesses, as they see this as contributing to delays in measures against global warming. [Contents] ■ Survey results from the Ministry of the Environment (December 2018) ■ Consideration of strengthening regulations from four perspectives ■ Background and future of regulatory strengthening *For detailed information, please refer to the related links. *For more details, please refer to the PDF materials or feel free to contact us.

  • air conditioning
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Things companies should understand regarding the amendment to the "Fluorocarbon Emission Control Act."

Things companies should understand regarding the amendment to the "Fluorocarbon Emission Control Act."

Are you missing out by not knowing? An introduction to the suppression of freon emissions, said to be a cause of ozone layer destruction.

The "Freon Emission Control Law," which came into effect in April 2015, is a revised law that modifies the previous "Freon Recovery and Destruction Law." The suppression of Freon emissions, which is said to be a cause of ozone layer depletion, is an important theme in global environmental issues. Here, we will introduce what companies should understand under the revised "Freon Emission Control Law." [Contents] ■ What has changed with the revision of the Freon Emission Control Law? ■ Increased efforts by managers due to the revision of the Freon Emission Control Law ■ Mindset during Freon leaks based on the Freon Emission Control Law ■ Compliance with the Freon Emission Control Law *For detailed content of the article, please refer to the related links. *For more information, please refer to the PDF materials or feel free to contact us.

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Japan's Response to the Kigali Amendment

Japan's Response to the Kigali Amendment

A digest on the future of HFC regulations based on the Kigali Amendment to the Montreal Protocol!

The "Kigali Amendment," which establishes obligations for the phased reduction of HFC consumption. In Japan, in anticipation of the issuance of the Kigali Amendment on January 1, 2019, a response plan was compiled in September 2017. In response, a public comment period was held from October 6 to November 6, 2017, but this time we will explain the proposal prior to the reflection of public comments. Please take a moment to read it. [Contents] ■ Japan's response to the Kigali Amendment - Basic policy for domestic guarantees - Regulated substances - Handling of standard limits - Handling of destruction quantities - Other considerations *Detailed content of the article can be viewed via the related link. *For more information, please refer to the PDF materials or feel free to contact us.

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Renovation or Replacement: Four Questions to Determine Your Equipment Upgrade Strategy

Renovation or Replacement: Four Questions to Determine Your Equipment Upgrade Strategy

To make suitable choices for the needs of your facilities and buildings! Introduction of useful air conditioning information.

As buildings age, you may find yourself at a crossroads of whether to replace or renovate the air conditioning equipment. According to a report from the U.S. Energy Information Administration, about half of commercial buildings were constructed before 1980. When equipment ages or approaches the end of its useful life, customers are faced with the decision of whether to renovate or replace. To make the right choice for your facility or building's needs, let's consider the answers to the following four questions. [Content] ■ Retrofit vs. Replace: What is the ROI (Return on Investment)? ■ Where is the equipment installed in the facility? ■ What is the remaining lifespan performance of the equipment? ■ What is the connectivity capability of your equipment? *For more details, you can view the related links. *For more information, please refer to the PDF materials or feel free to contact us.

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Case Study of Turbo Refrigeration and Ice Storage Introduction: Delta College

Case Study of Turbo Refrigeration and Ice Storage Introduction: Delta College

Introducing examples of the implementation of ice thermal storage and other green technologies.

We would like to introduce a case where ice storage and other green technologies were implemented to reduce energy consumption and costs at Delta College. As the campus grew, we aimed to establish methods to optimize energy and carbon dioxide emissions and reduce the life cycle costs of all new and existing buildings. We proposed an upgrade to the chiller plant, achieving significant cost savings. [Results] - Reduction in electricity and gas consumption - Reduction in carbon dioxide emissions across the facility - Annual energy cost savings of over $100,000 - Peak power demand decreased by 1.5 MW - Achieved LEED Gold® certification *For more details, please refer to the related links or feel free to contact us.

  • Other energy equipment

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What is the Kigali Amendment?

What is the Kigali Amendment?

The Kigali amendment mandates the gradual reduction of HFCs! Introduction of useful air conditioning information.

The substitute for freon, "HFC (hydrofluorocarbons)," is widely used as a refrigerant in many devices and equipment. However, although HFCs are not ozone-depleting substances, they have a significant greenhouse effect, being 100 to over 10,000 times more potent than carbon dioxide, and measures for reduction have been considered necessary. Due to the impact of HFCs, the average temperature increase by the end of this century is estimated to be about 0.5 degrees Celsius. In this context, from October 10 to 14, 2016, the 28th Meeting of the Parties to the Montreal Protocol was held in Kigali, Rwanda, where an amendment to the protocol (the Kigali Amendment) was made to establish obligations for the phased reduction of HFC production and consumption. [Contents] ■ The Kigali Amendment mandates the phased reduction of HFCs. ■ The necessity of transitioning from HFC refrigerants to non-freon refrigerants. *For detailed information, please refer to the related links. *For more details, please see the PDF materials or feel free to contact us.

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What is the IPCC that presents GWP values?

What is the IPCC that presents GWP values?

Presenting the global warming potential of refrigerants! Introducing the organizational structure and the composition of evaluation reports, among other things.

In general, each refrigerant has a value for the Global Warming Potential (GWP) indicated. This GWP value is presented in reports by the IPCC, a global organization. This time, we will explain what the IPCC is. Please take a moment to read it. 【Contents】 ■ What is the IPCC? ■ Organizational structure of the IPCC ■ Structure of assessment reports ■ Previous reports by the IPCC ■ The IPCC and Global Warming Potential (GWP) *For detailed content of the article, please refer to the related links. *For more information, please refer to the PDF materials or feel free to contact us.

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