System Design Options

The total system power is now as follows:

Table 8. Total system power

Component Power (kW)

Base Case

Low Flow*

 

 

 

Chiller

256.0

292.0

 

 

 

Chilled-water pump

32.0

8.4

 

 

 

Condenser-water pump

25.2

8.8

 

 

 

Cooling tower

24.1

16.0

 

 

 

Total power for chilled-water system

337.3

325.2

 

 

 

*Low-flow conditions represented in Table 5 through Table 8 are 1.5 gpm/ton [0.027 L/s/kW] chilled water and 2.0 gpm/ton [0.036 L/s/kW] condenser water.

Energy Consumption, kW

Figure 20. System summary at full load

 

300

 

 

 

250

 

 

 

200

 

 

 

150

 

 

 

100

 

 

 

50

 

 

 

0

 

 

 

2.4/3.0

1.5/3.0

2.4/2.0

1.5/2.0

Chilled/Condenser Water Flows, gpm/ton

 

Tower

Condenser Water Pumps

Chilled Water Pump

Chiller (100% Load)

It becomes clear that flow rates can affect full-load system power (Figure 20). Even though the chiller requires more power in the low-flow system, the power reductions experienced by the pumps and cooling tower result in an overall savings for the system.

What happens at part-load conditions? Figure 21 shows the part-load performance based on the following assumptions:

•The chilled-water pump includes a variable-frequency drive.

•The condenser-water pump remains at constant power.

•The cooling tower is controlled to produce water temperatures lower than design.

32

Chiller System Design and Control

SYS-APM001-EN

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Trane SYS-APM001-EN manual Total system power Component Power kW Base Case Low Flow, System summary at full load
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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.
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