Mount Rushmore National Monument

This project was a design assist with the owner’s representative and a local Consulting Engineer. Owner’s Representative solicited design concepts and preliminary budget numbers from local Contractors. Project description was to replace HVAC system to achieve LEED accreditation. Climate Control Systems and Service was the prevailing competitor. Existing system consisted of a hydronic heating and chilled water loops served by an 80% efficient boiler and air-cooled chiller. The heating/cooling was delivered via hydronic unit heaters, finned tube and 5 multizone air-handling systems. The domestic water heater plant consisted of 3 80% efficient water heaters.

Proposed Solution

Climate Control Systems & Service recommended:

-Replace hydronic boilers with 96% efficient condensing hydronic boilers

-Replace air cooled chiller with 2 heat recovery chillers for shoulder season heating/cooling

and an air-cooled chiller for summer cooling.

-Remove 2 of 3 domestic water heaters and provide low temp hydronic to domestic water

preheat system served by heat recovery chillers and condensing boilers.

-Replace temperature controls system

-Add airside economizer to multizone air-handling systems

-Add demand control ventilation to minimize introduction of outside air when the building

occupancy is low.

-Provide Variable Frequency Drives on all air handling unit fans and pumps to allow variable

Flow

-Replace hydronic three-way valves to modulating two-way valves to allow for variable

hydronic flow

-Meter propane usage for kitchen, heating plant and domestic water plant

-Meter domestic water usage for kitchen and remaining building.

-Meter electrical usage.

-Assist LEED Commissioning agent for final building commissioning

-Replace heating and chilled water pumps

Results

-Reduced energy consumption

-Improved thermal comfort

-LEED accreditation is on going

Project Details

CLIENT:
Mount Rushmore National Monument

HVAC NEEDS:

HVAC replacment and LEED Accreditation