Introduction to water cooled water chiller Unit classification 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. chilled water air conditioning system,commercial water chiller,water chilling system,cooled water chiller,air conditioner chiller unit GUANGZHOU GENT NEW ENERGY TECHNOLOGY CO., LTD , https://www.gentgz.com
Chicago 5-11 at 1520 S Indiana in 1974 (more)
This is a follow-up from Steve Redick regarding a 1974 fire incident in Chicago, specifically the 5-11 alarm at 1520 S. Indiana Avenue.
In his message, Steve shared that he had previously posted about this event and has now received some new information to add. He mentioned that longtime fan Chuck Bleck, who was working in the insurance industry back then, created a detailed diagram of the fire and generously provided it. In addition, Chuck sent a copy of the report that appeared in *Turnout* magazine, as well as some other valuable historical data from the Chicago Fire Department (CFD).
There are several images attached here that provide more insight into the event. The first one is a photo of a Big John turret wagon, taken by Warren Redick. Another image shows some old typewritten notes related to the 5-11 alarm fire, giving a glimpse into how information was recorded back in the day.
There’s also a map created by Chuck Bleck, which outlines the area and possibly the response routes used during the fire. It's fascinating to see how much detail was put into these early reports, especially considering the technology available at the time.
**A quick note for our younger readers:** If you're wondering why the text in the summaries looks a bit unusual, it's because they were typed on a typewriter—no computers or digital tools back then. It adds a unique charm and reminds us of how things used to be done before the digital age.
These materials offer a rare and valuable look into a significant historical fire, and we’re grateful to Steve and Chuck for sharing them with us.
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.
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.