Blog

Pump Tank Combination

Posted on June 8, 2018 by Tim Rusher

Including a Pump Tank Combo to your rental chiller allows process customers to obtain an exact flow (gpm’s) at the temperature desired for processing. Pump Tank Combos are versatile tanks that can be modified to meet the specific needs of your facility and application. 

Other advantages to including a Pump Tank Combo are:

  • More flexibility for a limited loop
  • More constant supply temperature
  • Alternative to plate and frame heat exchanger

Chilled water pump tanks also offer variable frequency drive (VFD) options for optional control and energy usage.
Pump Tank Combo RES Rental PipingPump Tank Combo RES Tank

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Test Stand

Posted on May 17, 2018 by Tim Rusher

RES Test Stand

Our onsite Test Stand allows our customer to witness the equipment operating prior to delivery. Our Test Stand includes boilers, pumps, heat exchangers and cooling towers. This combination allows RES to test both air cooled chillers and water cooled chillers.

A witness test is a great way for customers to observe the chiller’s ability to be demonstrated under specific loads. With the increasing amount of geothermal uses, we can also test chillers in heating mode. 


Prior to delivering a rental chiller RES assesses the chiller on our Test Stand to verify it is running in prime condition. In the video below you can see our Test Stand during operation with a chiller cooling water down to 15°F.
 

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Chiller Test Stand blog

Posted on October 18, 2017

Refrigeration and Environmental Systems has a custom built Rental Chiller Test Stand in our own yard. RES can easily hookup any rental chillers or Dunham Bush equipment that you have purchased to the test stand. In addition, we can also connect it to a complete plant including a cooling tower, boiler, pumps, tank, and generator. The test stand is a great way for our customers to witness the operation and function of equipment before delivery.

In this video you can see our chiller experts cooling water with a low temperature chiller to 15°F. To view additional videos of our test stand click the link to our Facebook page and Like Us to keep updated on our newest services and products!

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HVAC Case Study

Posted on October 18, 2017

A Healthcare Facility Installation

Dallas Methodist Hospital Case Study – Cooling System Transplant

Refrigeration and Environmental Systems converted this healthcare facility’s cooling system to an all variable speed format. Using Armstrong chilled water and condenser water pumps, a new chiller and cooling tower, the outcome was a success. The Armstrong pumps were controlled by an Integrated Plant Controller (IPC) 11550.

Summary of Outcome

After a retrofit installation of updated HVAC equipment, Methodist Dallas Medical Center reduced their cooling costs over $300,000 over a year. The new system not only saves energy, but also creates a more comfortable environment for staff and patients. The hospital now experiences sharp reductions in “hot” calls. The maintenance staff says that the new system is far easier to operate, monitor, and adjust.

Since 1927 the Methodist Dallas Medical Center serves North Texas. The hospital includes a Level III Neonatal Intensive Care Unit. Methodist Dallas Medical Center is home to the Methodist Dallas Transplant Institute, one of the largest, most active multi-organ transplant centers in the southwest United States.

The facility recently underwent a transformation as a result of a retrofit HVAC project. When the retrofit project was first proposed, the legacy mechanical system included a 30-year-old cooling tower and a 25-year-old chiller. The original solution included some piping irregularities that led to inefficient operations.

Refrigeration and Environmental Systems proposed a new design to the hospital’s facility managers. The facility managers were interested in the proposed energy savings. They were concerned about the upfront costs of the equipment and skeptical that any new technology could provide the proposed improvements.

This was the customer’s first exposure to variable speed technology. To address their concerns, Armstrong provided a written commitment regarding the performance of the system. With that assurance in hand, the hospital agreed to the proposed system.

The facility managers had not previously worked with Vertical In-Line pumps, but on the recommendation from Refrigeration and Environmental Systems they agreed to designing the system around the Armstrong VIL. Tim Rusher of RushCo explained how he had supported the use of Armstrong pumps in discussions with hospital officials. “I told them that Armstrong makes the best chilled water pumps in the world. I’ve used them for years. For HVAC installations, we prefer them over any other brand of pumps.”

The retrofit project involved several weeks of work on-site. The old equipment was removed and preparations made to accept the new equipment. The retrofit included cutting a hole to install the new chiller. The final system included a new cooling tower, a new chiller, improved piping coupled with key components provided by Armstrong:

3 X 250 hp VIL pumps to serve the chilled water system
5 X 100 hp VIL pumps to serve a condenser water system
Integrated Plant Controller (IPC) 11550

Armstrong makes the best chilled water pumps in the world. I’ve used them for years. For HVAC installations, we prefer them over any other brand.

Tim Rusher

CEO, RushCo Energy Specialists

Frequently Asked Questions

About the Armstrong IPC 11550 System with Ultra-Efficient Chilled Water Plant Control Utilizing Hartman LOOP™ Technology

General Information

The IPC 11550 is an automated purpose duty control system designed specifically for energy efficient control of chilled water plants for comfort cooling (HVAC applications). The IPC 11550 manages the sequencing, operation, positioning, and/or speed control of the following chilled water plant devices:

• Chillers
• Chiller isolation valves
• Variable primary flow by-pass modulating valve(s)
• Building VPF pumps
• Condenser water pumps
• Cooling tower fans
• Chilled water supply temperature reset
• Emergency shut down and general recovery sequences

The IPC 11550 includes Hartman LOOP™ control methodology for ultra-efficient all variable chilled water plant control.

What is the connection between the Armstrong IPC 11550 System with Ultra-Efficient Chilled Water Plant Control and the Hartman LOOP™ Technology?

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Spot Cooling Rentals by RES Rentals

Posted on October 5, 2017 by Tim Rusher

Ever wonder how to cool a large area where ac equipment can’t be used? Portable spot cooling is being used in different applications now more than ever. From data centers, hospitals, retail stores, and even outdoor weddings, portable spot cooling comes to the rescue! RES Rentals has a line of portable spot cooling ready for your next emergency situation or planned event.

Read more about portable spot cooling here! —–>> What does Spot Cooling mean???

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40 Degree Water in Mixing Plant

Posted on October 5, 2017 by

With it being in the high 90’s in Texas this plant isn’t using Retarder, Ice, or Liquid Nitrogen…Just Cold Water.  The mixing is the same for the plant mixer. They fill their hopper with cold water and when they hit the desired weight they can mix it with the aggregate.  Also we can chill the water you are cooling your aggregate with too.

Contact me today for more information! I’ll be happy to come out for a site visit and see how we can lessen production costs.

Todd Johnson | 214-850-9887

todd.johnson@systemrefrigeration.com

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