Page 2 - FQ10722.SnowWhiteLinen.AK.WWHRS

Snow White Linen Proposal No. Q10722
700 I Street
Anchorage, AK 99501 Date: March 20, 2018

Attn: Mr. Sidney Mileskie Salesman: JRS/kr

Subject: Wastewater Heat Recovery Tel: 907.330.7635

This proposal for a WASTE WATER HEAT EXCHANGER and DIRECT CONTACT WATER HEATER has been
designed by Ludell Engineers and based upon requirements and data provided by your facility. This
proposal does not include equipment rigging, installation, and start-up. Initial start-up and training
performed by a Ludell Service Technician can be provided at an additional cost per your request.

For your review, this proposal includes:
• An energy savings projection and heat recovery value calculation
• An itemized description of requested equipment, optional add-ons, and associated costs
• Ludell guarantees, warranty, terms, and conditions

ENERGY SAVINGS PROJECTION
These calculations are based on your facility’s equipment and production hours
(assuming 1 wash cycle per hour)
- Four (4) 900 lb. Ellis Washers @ approx. 2.5 Gallons per Lb.
- One (1) 450 lb. Braun Washer @ approx. 2 Gallons per Lb.

4 x 900 lbs. x 2.5 gallon/lb. + 1 x 450 lbs. x 2 gallon/lb. = 9,900 Gallons Per Hour (GPH) or 165 GPM

- Fall/Winter Operation; roughly 26 weeks at 40 Hours per Week
- Spring/Summer Operation; roughly 26 weeks at 60 Hours per Week

40 hours x 26 weeks + 60 hours x 26 weeks = 2,600 Production Hours per Year

Estimated Wastewater Consumption @ 10 - 20% Evaporation …………..................................... 150 GPM
Estimated Hot Water Make-up Flow …………………………………………….......................................... 145 GPM
Estimated Wastewater Temperature ……………………………………………….................................... 120 Deg. F
Customer Cold Process Water Temperature …………………………………………………………………...……. 38 Deg. F
Customer’s Desired Hot Water Temperature ......................................................................... 150 Deg. F
Customer’s Cost of Fuel (Natural Gas) ................................................................................... $8.24/mcf
($11.00 per 1,000 lbs. of Steam @ 75% Boiler Efficiency)