Richard Kunz, chemist - Air & Water Science

School Plant Managers & Chemists Engineer Closed System Care

The chemistry of closed system water determines rates of corrosion and system life. Plant managers, disappointed in the self-serving advice of chemical salesmen, have turned to science. They, with an HVAC chemist, engineer their district's monitoring and treatment program.

Water analyses, corrective chemical treatment and corrosion monitors are included in programs costing $192 per system per year.


Why Chemists Have Joined the NSPMA	Imagine Working with an ASC Chemist	School Districts conducting engineered closed system programs

17 Better Ways ...
1)	Chemists Should Engineer and Supervise HVAC Water Chemistry
2)	How A Chemist Cooperates with Your Maintenance Staff
3)	Your Chemist Supplies Detailed Color Reports, Complete System Histories
4)	A Demonstration of Zero-Corrosion Preventive Treatment
5)	How Your Chemist Supplies Corrective Treatment Chemicals
6)	How Your Chemist Measures Corrosion
7)	A Portable Chemical Pot Feeder Treats MANY Systems
8)	How To Keep Glycol Feed Tanks Clean
9)	How To Deionize Closed Loop Water and Save Expensive Antifreeze
10)	How A Chemist Determines the Volume of Water in a Closed System
11)	Sodium Sulfite (Oxygen Scavenger) Protects the Entire Steam System
12)	Kevlar® Pulp … Stop-Leak for Closed Loops
13)	Nano Activated Carbon Powder (NACP), Applied to Air Filters, Converts them to Indoor Air Cleaners
14)	Inducing Liquid or Gas into Make-Up Water with a Venturi Device
15)	Diffusion Feeders for Small Cooling Towers and Evaporative Coolers
16)	Sanitizing HVAC Waters with Silver Ions
17)	Preoperational Cleaning of Closed Loops

A Common Problem
Nitrite / Borate, the Wrong Treatment Oxygen Corrosion of Carbon Steel Boiler Tubes (during nitrite/borate treatment)

Buyer Beware!
magnetic "treatment" devices do not work expensive treatment chemicals

Systems Described
closed loops closed steam loops

Procedures
descaling a boiler preoperational cleaning determining closed loop volume save expensive glycol in closed systems controlling biological growth in glycol feeders

Corrosion Topics
corrosion in general bi-metal / galvanic corrosion galvanic series of metals and alloys corrosion potentials graph copper pipe corrosion

MSDS Sheets
ANTIFOAM - silicone emulsion DIPOTASSIUM PHOSPHATE - pH buffer HEDP (powder) - scale inhibitor HEDP (liquid) - scale inhibitor MOLYBDATE - corrosion inhibitor POTASSIUM HYDROXIDE - 45% lye QUAT - biocide RHODAMINE WT - red dye SLS - corrosion inhibitor SULFITE - oxygen scavenger