CO2 Snow Economics This page estimates costs for site preparation starting from an existing building. SAGE is not designed to make estimates for site preparation from bare ground. If you answered the process questions in the SAGE expert system, suggested values will be shown in the boxes on this page. You may change these values if you wish. If you came directly to this page without going through the expert system, the boxes will be blank and you can provide your own values. The following diagram displays how the final cost was calculated. Again, if we have omitted some costs that should be included in the model, please identify those elements to us so that we can include them. Some of these costs may be zero, depending on how the potential user answers the questions in the boxes on this page. The costs provided by this site are intended to be first level approximations. The goal is to provide estimates that are within 20% of actual values encountered by the user. Other factors outside of the scope of this application will affect the final costs. 1. Type of Gun    No Gun  General Purpose Gun  High Purity Gun  Duel Gas Gun  Special Purpose Gun (Heated)  Special Purpose Gun (Special Nozzle) 2. CO2 Storage Tank The type of tank needed for storing the incoming carbon dioxide prior depends on the amount to be used. Quantities of less than 100 pounds are generally obtained in gas bottles. Amounts from 100 to 12,000 pounds are usually fed directly from on-site trucks. Large on-site storage tanks are generally used to hold larger quantities. Common sizes for these large tanks are 14, 30, and 60 tons.   Include Storage Tank in calculation   Please enter the required capacity of the tank needed in lbs.  3. Tank Pad   Include Tank Pad in calculation   Please enter the tank pad surface area requirements in ft2.  4. Enclosure An enclosure may be necessary to keep the parts clean or dry. If your parts require this, calculate an enclosure volume (i.e. 4 feet wide x 8 feet long x 10 feet high = 320 cu. ft.) that will hold all of the parts you need to clean in one batch.   Include Enclosure in calculation   Please enter the enclosure working dimensions. Height:  Width:   Length:  5. CO2 Purifier Duty cycle is the ratio of the time the unit is spraying to the time it is off. If you plan to clean a high number of parts at a time or a large surface area, consider choosing the high duty cycle.   No purifier For 25% duty cycle, 0.6 lbs. per four minutes For 100% duty cycle, 0.6 lbs per minute 6. High Pressure Lines   Include High Pressure Lines in calculation   Please enter the distance between the CO2 storage facility and the utility outlet in ft.  Please enter your sales tax as a whole number:  % * i.e. A sales tax of 5% should be entered as 5, not .05 or 1.05 Click here to estimate the cost Min. Estimated Cost: $  Max. Estimated Cost: $  State Information | Glossary | Conversion Checklist | Comments Home | Process Advisor | Alternatives | Links | Search All SAGE material, Copyright© 1992, Research Triangle Institute Last Update: 15 June 2001 sage@rti.org http://clean.rti.org/economics/Cost_Model.cfm?id=sn&cat=ec