SOLAR POWERED BLOWER FOR BLACKSMITHS. Techno-commercial information of the product: A report submitted to purchase committee of SELCO

Transcription

1 SOLAR POWERED BLOWER FOR BLACKSMITHS Techno-commercial information of the product: A report submitted to purchase committee of SELCO

2 1 SOLAR POWERED BLOWER FOR BLACKSMITHS Background Blacksmiths are one of the very few traditional artisanal workers community who have survived to exist in rural economy even today mainly for two reasons: The rural economy in India is based on agricultural production and agro processing mostly in tiny scale or domestic units. A substantial majority of agricultural production emanates from small and medium land holdings. The preferred designs of hand tools used in agricultural production and post production vary considerably from region to region making it difficult for industrial mass manufacturers to penetrate to all areas equally. But the major issues faced by blacksmiths are: Low income, low productivity and labour shortage. Competition from industrial products, increased cost of raw materials and charcoal, unavailability of charcoal, shortage of labour, additional labour cost to operate the manual blower are all adding to the burden of blacksmiths making it difficult for them to depend on their traditional artisanal work for living. Hence forcing these communities to migrate to cities looking for other employment opportunities especially the younger generation. Increasing the income levels and productivity is an essential measure to be attempted for the survival of this artisanal work. One of the most common issues faced by blacksmiths is shortage of labour to operate the manual blower and huge labour cost which takes away a significant portion of their income. Due to dependency on an additional labour and irregularity with labour turning up for work, labour has become a major operational challenge for blacksmith resulting in loss of income. Even though there are motorized blowers available in the market they are very inefficient (attached with 0.25 hp motor) and as most of the blacksmith workshops are not connected to grid supply most of them would still be dependent on traditional bellows or hand cranked blowers. Even if the blacksmith workshops are connected to grid, due to erratic power cuts in rural areas, these blowers won t be useful to full extent instead it further increases uncertainty with labour planning and productivity. Hence there is a need for developing an efficient, reliable, cost effective solution for the blower requirement of blacksmiths. Properly designed energy efficient blower requires about 92% lesser energy for operation compared to motorized blowers available in the market. Hence the solar powered blower solution is very cost effective and has an attractive payback period of 2-3 months considering the additional labour cost alone thus reassuring better livelihood for blacksmiths.

3 2 Solar powered blower solution: The solar powered blower solution consists of an efficient blower designed for blacksmith forge requirement with required air flow (CFM), static pressure (mm-h 2 O), rpm etc. which is operated from 12 V DC source. Electrical schematic diagram of solar powered blower General load requirement [Blacksmith workshop] Sl. No. Load Particulars Wattage No. of appliances Usage hours/day 1 DC Blower 15 W 1 5 hours [usage hours blower] 10 hours [operational hours workshop] Sl. No. Particulars Specification Quantity 1 Solar Module 40 Wp, 12 V 1 2 Solar Battery 20 Ah, 12 V 1 3 MMS 40 Wp, 1M 1 4 Charge controller [SSR] 10 A, 12 V 1 5 DC Blower [Cooltron] 15 W, 12 V 1 6 PWM Speed controller [EMSYS] 30 W, 12 V 1 7 Coupling pipe 1 8 Cables red+black 2.5 sq.mm. 15m + 15m 9 Consumables As required Indicative cost: 16,500/-

4 3 PRODUCT INFORMATION DC Blower: The specifications of DC blower is given below. Also detailed specification sheet is attached in a separate document. Sl.No Particulars Specification 1 Make Cooltron Indusrial Supply Inc. 2 Model No. FBD1232B12W7-81-2R 3 Outline dimension 120 x 120 x 32 mm 4 Rated Voltage 12 V DC 5 Operating voltage 8 V 13.8 V DC 6 Power consumption W (Max.16.2 W) 7 Rated Speed 3000 rpm ± 10% 8 Max. Air flow 38.2 CFM 9 Max. static pressure 32.8 mm-h2o 10 Life expectancy 80,000 Hours at 40 0 C About Cooltron: Coolron Group is an American company that has been designing and manufacturing industrial cooling products for over 17 years. Established in the year 1999 Cooltron has its head office in Los Angeles, U.S.A. Business: Fan, Blower, Fan accessories & heat sink Global Network: U.S.A, Europe & Asia A detailed profile of Cooltron is provided in a separate document. About SRV Technologies: Founded in 2006, Head quartered in Mumbai, SRV Technologies offers diversified range of products, services & turnkey solutions. SRV Technologies has marketing & support offices in Mumbai, Delhi, Bangalore & Pune. SRV technologies is the distributor for Cooltron products in India. Products & Solutions: CCTV, Access & time attendance control system, residential apartment security solutions, Intrusion & fire alarm systems, LED Lights. A detailed profile of SRV Technologies is provided in a separate document.

5 4 Cost structure for DC blower: M.O.Q less than 10 pcs. M.O.Q less than 40 pcs. M.O.Q less than 120 pcs. M.O.Q 120 Pcs Tax Tax Tax Tax The prices provided here were arrived at after several rounds of negotiation with the vendor. Based on the yearly projections & commitments we might be able to get further discounts. Formal quotation for the same has been provided separately. Warranty & service terms: 1. Cooltron DC blower is warrantied for a period of 1 year against manufacturing defects. 2. For any failures within the warranty period SRV Technologies would provide a replacement unit. 3. As the DC blower is considered as a spare component of larger systems, Cooltron neither can repair these units nor provide spare parts for the blower after the warranty period. 4. Due to the above mentioned warranty term from Cooltron, SRV technologies will have to follow the same warranty terms. But SRV technologies will explore the possibility of repairing the units with locally sourced spare parts only if the failure rates of these blowers are found to be higher than 1-2%. 5. SRV Technologies would maintain a spare of 2-3% for replacement of failed units. Commercial terms: 1. Lead time : 6-8 weeks 2. In order to avoid the long lead time, SELCO should provide projections on quarterly/yearly basis and also SELCO can place orders in advance with a rescheduling window of 2-3 weeks. 3. Transportation costs (to & fro) for any replacement units to be borne by SELCO. Safety approvals for the DC blower: CE, UL, CUL, TUV. Relevant certificates are provided in separate attachments. Other warranty terms and general cautions for product usage are provided in the specification sheet of the product.

6 5 PWM speed controller: PWM based speed controller for the DC blower is designed and supplied by EMSYS Electronics, Bangalore. Make Rating Speed control type Cost for initial sample (per unit) Price (1 st negotiation) Price (2 nd negotiation) Warranty EMSYS Electronics, Bangalore 30 W, 12 V Smooth control (Zero to max. speed) Rs Tax Rs Tax Rs Tax 1 year against manufacturing defects After warranty period the product can be repaired on chargeable basis. Estimated spare component cost Rs.50/- (Actual cost would depend on the nature of failure) Formal quotation provided separately in attachments. Sample picture of DC blower + PWM speed controller unit

7 6 Coupling pipe: Coupling pipe required to connect the output of the DC blower to blacksmith forge was fabricated in a local workshop at Karkala for pilot installations (15 sites). Currently SELCO Foundation product design team is working on standardized design for replication through SELCO incorporating the necessary design modifications. The cost of coupling pipe Rs.500/- (fabricated at local workshop) The cost for the new design is expected to be around Rs.500 or lower. Once the standard design is made along with material specification and drawings these coupling pipes could be manufactured at a central location as per the convenience for transportation. Sample of coupling pipe installed (painted black) at blacksmith workshop Other Solutions being worked on for blacksmiths: 1. Portable blower solution for nomadic blacksmith/temporary workshops [Product development phase] 2. Solar solution for grinding tool [Product development phase]

8 Installation photos: 7