System Configurations, Parallel Chillers

System Configurations

Multiple chilled-water systems are more common than single chilled-water systems for the same reason that most commercial airplanes have more than one engine—the balance of reliability and cost. The most typical system configuration, by far, has two chillers. Since system loads can vary throughout a wide spectrum, multiple chilled-water systems can often operate with one chiller. During these periods, if the system is designed properly, the energy required to operate a second chiller and its auxiliaries can be conserved.

This section examines:

•Constant flow systems

•Systems in which flow is constant through chillers, but variable through the rest of the system

•Systems in which flow varies throughout the entire system—including the chillers

Parallel Chillers

Figure 25 shows a system with two chillers piped in parallel, using a single chilled-water pump.

Figure 25. Parallel chillers with a single, common chiller pump

54°F [12.2°C]	54°F [12.2°C]
54°F [12.2°C]
	Chiller 2 (Off)
	49°F [9.4°C]

Constant

Flow

Pump

Chiller 1 (On)

44°F [6.6°C]

With constant flow loads, water flows in both chillers continually, whether the chiller is operating or not. Clearly, this can disrupt the supply chilled-water temperature when only one chiller is operating. The temperatures indicated in Figure 25 show how the supply water temperature rises when one chiller is cycled off in response to a part-load condition. This may result in inadequate dehumidification capabilities or the inability to satisfy specific loads.

Chiller System Design and Control

SYS-APM001-EN

SYS-APM001-EN specifications

The Trane SYS-APM001-EN is an advanced control system designed for HVAC (Heating, Ventilation, and Air Conditioning) applications, specifically tailored to enhance energy efficiency and system performance. This comprehensive solution integrates cutting-edge technologies to optimize climate control in commercial and industrial environments.

One of the main features of the SYS-APM001-EN is its intuitive user interface. The system is equipped with a large, easy-to-read display that provides real-time data on system performance, energy usage, and environmental conditions. This user-friendly interface makes it simple for operators to monitor and adjust settings, ensuring optimal comfort levels and efficient energy consumption.

Another key characteristic of the SYS-APM001-EN is its advanced data analytics capabilities. The system collects and analyzes data from various sensors throughout the building, providing insights into occupancy patterns, equipment performance, and energy consumption trends. This data-driven approach allows facility managers to make informed decisions about system adjustments, predictive maintenance, and energy savings.

The SYS-APM001-EN also boasts robust integration capabilities. It can seamlessly connect with a variety of building management systems (BMS) and other third-party devices. This interoperability enables a cohesive operational ecosystem where HVAC systems can communicate and cooperate with lighting, security, and fire safety systems, enhancing overall building efficiency.

Energy efficiency is a hallmark of the SYS-APM001-EN, as it implements sophisticated algorithms to optimize system operation. These algorithms adjust equipment performance in real-time based on current conditions, thereby reducing energy waste and lowering operational costs. The system is designed to support multiple energy-saving strategies, including demand-controlled ventilation and optimal start/stop scheduling.

Additionally, the SYS-APM001-EN is built with scalability in mind, accommodating facilities of various sizes and configurations. Whether it’s a small office building or a large industrial complex, the system can be tailored to meet specific needs, ensuring that HVAC performance aligns with operational goals.

In conclusion, the Trane SYS-APM001-EN is an innovative HVAC control solution that emphasizes user experience, data-driven decision-making, and energy efficiency. With its advanced features and technologies, it is an essential tool for optimizing building performance and enhancing occupant comfort while reducing environmental impact.

Trane SYS-APM001-EN manual System Configurations, Parallel Chillers

Models: SYS-APM001-EN