When Envelop needed to expand its office space our neighbors applied our custom solution to the new Indianapolis headquarters. This entailed an open protocol control system that optimized and provided monitoring for the HVAC, lighting and security systems.
Our Space Built with Our Technology
Indianapolis Headquarters
A Look Into Every Square Foot
Design Implementation
For the building’s unique mechanical system, our engineers incorporated an energy efficient, low maintenance and sustainable design.
Evapco
Fluid Cooler
Designed for 100% dry capacity at a dry bulb switch-over temperature of 67.9F, there's no need to waste water to cool the fluid from the building whenever the outdoor temperature is less than 67.9F. Calculated water savings of 90% annually, using on 7,163 gallons of water, compared to 94,984 gallons of typical induced draft closed circuit cooler
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ConsERV
Multi-Stack Energy Recovery Unit
2000 cfm of outdoor ventilation air, 1900 cfm of building exhaust air. At winter. design of -10F outside, this unit raises the out air temperature to 43F, and helps raise humidity in the dry outdoor air by adding 36.1 lb/hr of moisture. At summer, design of 95F outside, this unit cools the outdoor air to 91.8F and removes 26.7 lb/hr of moisture. There is no cross-contamination of the outside and exhaust air across the enthalpy cores.
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Custom Air Handler
Ventilation and Primary Air Unit
Liquid Desiccant Air Handler provides low dew point primary air to Active Chilled Beams serving the perimeter and ventilation air to the rest of the entire building. Direct and independent control of humidity and temperature means there's no need to overcool and reheat, saving 20-40% of the energy associated with outside air high latent mechanical systems and 30-60% over solid wheel desiccant systems. The non toxic liquid desiccant solution acts as a biocide by scrubbing the cross flow of microorganisms and bacteria.
Learn MoreA Look Into Every Square Foot
Heating & Cooling
The core of the building is conditioned by a water-cooled Variable Refrigerant Flow (VRF) system. The perimeter and some conference rooms are served by Active Chilled Beams, which require on 23% of the fan driven airflow of a typical Variable Air Volume(VAV) system, resulting in astounding fan energy savings. An innovative liquid desiccant dehumidifying air handler with air pretreated by an enthalpy core heat exchanger provides the ventilation for the building and the primary air the for Active Chilled Beams. An efficient Water-Source Heat Bump with hot gas reheated for humidity control serves the Training Room. The water-cooled system is cooled by an eco-Fluid Cooler, designed to save 92% of the water used by a typical fluid cooler.
