人の話は空の果て

仕事場の窓からおっきな鶴の巣が向かいの建物
の屋根の上に見える。毎年春の終わりにペアが
一組やって来て、オスメスの舞いを見せ、喉を
ケタケタ鳴らし、卵をかたくなに温め、生まれ
たヒナにせっせとエサを運び、自分らと体の大
きさが変わらないほどまでに育った甘えん坊た
ちに飛行を教え、秋の入口に旅立ってゆく。

What is refrigeration equipment?

What is Refrigeration Equipment?

Refrigeration equipment means a stationary device that is designed to contain and use refrigerant gas to establish or maintain colder than ambient temperatures in a confined space, including, but not limited to, retail food refrigeration equipment, a household refrigerator or freezer and a cold storage warehouse.

What are the 3 types of refrigeration?

Following are the types of refrigeration are explained below: Mechanical compression refrigeration. Evaporative cooling.

What are the four types of refrigeration system?

The most common refrigerants used for air conditioning over the years include: Chlorofluorocarbons (CFCs), including R12. This is known to contribute to the greenhouse gas effect. Production ceased in 1994. Hydrochlorofluorocarbons (HCFCs), including R22.

What are the refrigeration components?

Most people see their central air conditioners as overly complex devices that only a seasoned HVAC technician can understand. In reality, the average air conditioner can be broken down into four main components: the evaporator coil, compressor, condenser coil, and expansion valve.

What is refrigerant type?

Overview. The condenser's main job is to cool down the refrigerant. The condenser coils hold hot refrigerant. Air flows over the condenser coils and heat transfers from the hot condenser coils to the cool air. This heat transfer takes heat away from the refrigerant, so it cools it down.

What are the 4 main components of an AC system?

A condenser is designed to transfer heat from a working fluid (e.g. water in a steam power plant) to a secondary fluid or the surrounding air. The condenser relies on the efficient heat transfer that occurs during phase changes, in this case during the condensation of a vapor into a liquid.

What is condenser in refrigeration?

A condenser (or AC condenser) is the outdoor portion of an air conditioner or heat pump that either releases or collects heat, depending on the time of the year. Both split air conditioner and heat pump condensers are made of the same basic parts.

What is a condenser do?

However, there isn't just one type of refrigerant, which makes it easy to get them confused. There are actually three different types, and using the wrong one can damage your air conditioner because they're not interchangeable. With that in mind, it's important to know as much as possible about these refrigerants.

What's an AC condenser?

The compressor is the "heart" of a refrigerator. It circulates the refrigerant throughout the system and adds pressure to the warm part of the circuit, and makes the refrigerant hot. It's similar to when you are pumping air into a bicycle tube - you can sense a heat increase in the pump while you compress the air.

What are the five 5 methods of refrigeration?

A refrigeration cycle has four major components: the compressor, condenser, expansion device, and evaporator. Refrigerant remains piped between these four components in the refrigerant loop.