Chicago FD special-duty, 10-3-14

Here's a message from Tim Olk:

A water main break caused flooding in basements at Armitage and Winchester. Emergency crews were on the scene quickly, working to pump out the water and prevent further damage.

Tim Olk photo

These photos show the efforts of firefighters and city workers trying to control the situation. The incident has raised concerns about aging infrastructure in the area, with many residents expressing worry over similar incidents in the past. Local officials have promised to investigate the cause of the break and take steps to prevent future occurrences.

Water Cooled Water Chiller

Introduction to water cooled water chiller

Water cooled chiller is a kind of cooling equipment that are widely used in industry, commerce and construction to provide cooling water to adjust temperature or meet process requirements.

Unit classification

According to the different cooling source used by the chilled water Air Conditioning, this kind of commercial water chiller can be divided into water chiller with natural water at normal temperature, such as groundwater, surface runoff, etc. as the cooling source, and water chiller with cooling equipment like cooling tower as the cooling source. Among them, the water source used by the water chiller that uses cooling equipment as the cooling source is tap water.

In the chilled water air conditioning system that uses natural water at normal temperature as the cooling source, the water as the cooling source does not circulate continuously in the unit, but is immediately sucked and discharged, so the temperature of the water participating in the heat exchange as the cooling source is very stable,

In the water cooled water chilling system that uses cooling equipment as the cooling source, the real cooling source is the tap water that has been cooled down after evaporation and heat dissipation by the cooling equipment. The tap water circulates continuously in the unit, and the water will be heated up after participating in the heat exchange, and then it will be cooled down by the cooling equipment, and participate into the circulation again after cooling. Therefore, the temperature of the cooling source is not stable, and it is necessary to replenish water to the cooling equipment to ensure that enough water participates in the circulation, thereby ensuring the cooling effect of the cooled water chiller.

Therefore, users who intend to purchase a water cooled water chiller need to first determine what cooling source is available to you first to choose the suitable air conditioner chiller unit.

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