ESCO ESCO Water Conservation and Efficiency 1

Question 1

Which metric is most commonly used by ESCOs to evaluate water efficiency improvements in commercial buildings?

Accepted Answer

Gallons per square foot per year

Answer

ESCOs typically benchmark water use intensity in gallons per square foot per year to compare buildings and track savings.

Question 2

What is a cooling tower 'cycles of concentration' (COC) and why does it matter for ESCO water projects?

Accepted Answer

The ratio of dissolved solids in blowdown vs. makeup water; higher COC reduces makeup water consumption

Answer

Increasing COC reduces the volume of makeup water required by the cooling tower, directly lowering water and sewer costs.

Question 3

Which fixture retrofit typically delivers the highest water savings per dollar in a commercial restroom ESCO project?

Accepted Answer

Low-flow toilets (1.28 gpf)

Answer

Toilets account for the largest share of restroom water use, so replacing high-volume flush toilets with 1.28 gpf models yields the greatest savings.

Question 4

An ESCO is analyzing a hospital laundry room. Which ozone laundry system benefit is most relevant to a water conservation measure?

Accepted Answer

Ozone dissolves soils at cold water temperatures, eliminating hot rinse cycles and reducing rinse water volume

Answer

Ozone laundering allows cold-water washing and shorter rinse cycles, cutting both water and energy consumption significantly.

Question 5

For ESCO measurement and verification of water savings, which IPMVP option is best when a submetered water meter is installed on the retrofitted system?

Accepted Answer

Option B — Retrofit Isolation with continuous measurement

Answer

Option B uses continuous metering of the isolated system to directly measure actual consumption before and after the retrofit.

ESCO - Energy Service Company Practice Test

ESCO - Energy Service Company Practice Test

ESCO ESCO Water Conservation and Efficiency 1