Understanding best practices and common pitfalls is crucial to any system design, especially those that are rapidly evolving such as hydronic heat recovery systems. Electrification initiatives, volatile fuel prices, and highly favorable payback economics are driving rapid adoption of heat recovery chillers and water-to-water heat pump systems across campuses and district energy networks. Because heat recovery captures the heat of compression alongside the evaporator cooling load, a water-to-water heat pump's efficiency is top-notch. However, converting theoretical energy recovery into real-world utility cost savings requires navigating interactions between coincident loads, equipment placement, and plant controls. This presentation delivers a practical engineering guide to applying water-to-water heat pumps and heat recovery chillers in various district-scale systems.
Key Learning Objectives
- Learn how to analyze hourly simultaneous heating and cooling profiles to accurately size heat recovery chillers
- Compare dedicated heat recovery, dual condenser, cascade arrangements, and external source integrations based on operating temperature requirements.
- Understand how equipment placement impacts the heat pump's effectiveness
- Identify key control concepts, turndown strategies, and loop volume considerations required to maintain stable, reliable operation without temperature cycling.
- Review real-world campus projects to identify best practices and savings opportunities
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