Optima Views – Evanston, IL

Introduction

This project involved an existing 28-story high-rise building with a complex plant system. The primary goal was to conduct a comprehensive life cycle cost analysis of the existing chillers. The client sought clarity on whether investing in new chillers would provide a better long-term financial outcome compared to the high costs and operational challenges associated with repeatedly repairing the old chillers, which were frequently out of service and required ongoing maintenance.

As part of the solution, a new chilled water plant was engineered, achieving approximately 50% electrical energy reduction, significantly enhancing energy efficiency and lowering operating costs. Additionally, a condensing hot water plant was designed, which reduced building heating consumption by approximately 18%, ensuring optimal performance and improved environmental impact.

This detailed analysis and engineering upgrade not only addressed the client’s concerns about equipment payback and maintenance but also delivered sustainable long-term benefits through enhanced energy savings and operational reliability.