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• An economic study of a solar collector investment project with specific aspects of energy saving

  121-124

  Zsolt Hollósy

  Nóra Hegedűsné Baranyai

  Arnold Gór

  Views:

  116

  The energy saving properi es of an exisi ng solar collector investment has been assessed based on factual data and stai si cal methods. The seasonality of electricity, water and gas consumpi on has been determined. The number of guest nights, the electricity and gas consumpi on showed a strong and a moderate correlai on. The costs saved did not live up to the expectai ons, which makes the return indicators signifi cantly worse. The discrepancy may be due to the system being designed to be bigger than reasonable or the great energy loss as well. The lat er may be because of the distance between the collectors and the hot water containers. The system may have calibrai on problems as well. The whole area brings about saving an amount of energy that equals to HUF 851000, which translates into 8788 m3 of natural gas. The decrease of CO2 emission should come to 16.26 t. on an annual average.

• Precision Farming as an Ecological Approach to Production?

  19-25

  Arnold Gór

  Zsolt Hollósy

  Views:

  117

  Ecology is ot en suppressed compared to produci vity, which makes us believe that economy is more important than ecology. With the growth of social need for traceability, food safety and food security, the trend is to turn away from conveni onal technologies. The ecological approaches all must cope with signifi cant loss of yield, which hinders their wide applicai on. Precision farming can be an opi on for the management to keep the high yield levels and decrease inputs at the same i me. The authors analyse, according to primary and secondary sources, precision farming compared to conveni onal and ecological farming to see the advantages and drawbacks of the diff erent technologies.