Description of Requirements.pdf

Description of Requirement

PI Name: Nathan Harms and Bradley Sartain

Branch: EL EEA Branch

Date: 25 June 2020

Quantity: 23 of each: – Heat pumps, 30GPM magnetic drive pumps, and Switch Flows 1”

General Description: Research greenhouses at ERDC provide temperature-controlled water baths for chemical control, biocontrol, and ecology studies of aquatic plants. Chillers/heaters at research greenhouses in both locations are failing due to age and are no longer sufficient to reach and maintain temperatures required for conducting these types of studies, or have failed and caused problems with ongoing studies resulting in experimental compromise. New, higher capacity chiller/heaters are needed to meet the needs of ongoing and expected upcoming research. At the ERDC, greenhouses support direct allotted and reimbursable work totaling an estimated $350-500K annually, and are necessary to provide researchers the ability to experimentally replicate water temperature treatments necessary in most experimental designs, as well as provide temperatures necessary for simulating real-world aquatic conditions.

The minimal needs for this equipment are heat exchangers to provide research grade stable and controlled water temperatures and dual state digital temperature controller in NEMA 4X-rated waterproof enclosure that will maintain water temperatures from 40-85ºF (5-29ºC). Heat pumps must include conduit flow switches for protection during power outages and self-priming pumps for water flow

Manufacture: Pentair Aquatic Eco-Systems

Equipment Includes:

Item Description Qty Total

Heat pump (heater/ chiller) 3/4 HP Aqualogic DSHP-7 heater/chiller 23 $55,424.25

30GPM magnetic drive pump Danner Supreme MD18 ¾” 30

GPM magnetic drive pump 23 $4,019.71

Switch flow 1” ST12 Switch flow 1” 0.5” FNPT conduit 23 $2,379.81

Total $61,823.77

Shipment will be to:

Nathan Harms and Bradley Sartain 3909 Halls Ferry Rd Vicksburg, MS 39180