Monitoring Water Banks with Telemetrics

Longstanding droughts across South Australia are forcing farmers to rethink the moisture in the soil they once regarded as their inalienable right. Trend monitoring is an essential input to applying pesticides and fertilisers in balanced ratios. Soil moisture sensors are transmitting data to central points for onward processing on a cloud, and this is making a positive difference to agricultural output.

Peter Buss, co-founder of Sentek Technology calls ground moisture a water bank and manufactures ground sensors to interrogate it. His hometown of Adelaide is in one of the driest states in Australia. This makes monitoring soil water even more critical, if agriculture is to continue. Sentek has been helping farmers deliver optimum amounts of water since 1992.

The analogy of a water bank is interesting. Agriculturists must ?bank? water for less-than-rainy days instead of squeezing the last drop. They need a stream of online data and a safe place somewhere in the cloud to curate it. Sentek is in the lead in places as remote as Peru?s Atacamba desert and the mountains of Mongolia, where it supports sustainable floriculture, forestry, horticulture, pastures, row crops and viticulture through precise delivery of scarce water.

This relies on precision measurement using a variety of drill and drop probes with sensors fixed at 4? / 10cm increments along multiples of 12? / 30cm up to 4 times. These probe soil moisture, soil temperature and soil salinity, and are readily re-positioned to other locations as crops rotate.

Peter Buss is convinced that measurement is a means to the end and only the beginning. ?Too often, growers start watering when plants don’t really need it, wasting water, energy, and labour. By monitoring that need accurately, that water can be saved until later when the plant really needs it.? He goes on to add that the crop is the ultimate sensor, and that ?we should ask the plant what it needs?.

This takes the debate a stage further. Water wise farmers should plant water-wise crops, not try to close the stable door after the horse has bolted and dry years return. The South Australia government thinks the answer also lies in correct farm dam management. It wants farmers to build ones that allow sufficient water to bypass in order to sustain the natural environment too.

There is more to water management than squeezing the last drop. Soil moisture goes beyond measuring for profit. It is about farming sustainably using data from sensors to guide us. ecoVaro is ahead of the curve as we explore imaginative ways to exploit the data these provide for the common good of all.

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Be pound poor and become Penny rich

Energy management is and should be perceived as a long-term investment by organisations. Having said this, the need for all organisations to implement energy management strategies now cannot be overstated as these strategies will save their costs of running the business in future.

Many organisations may shy off from implementing energy efficiency measures in place opting to save the associated costs or to use the cash for other projects that may be perceived as high priority in the short run. This is most likely to occur when cost cutting is a priority. Long-term planning is however critical for energy efficiency programs. Taking steps to improve building management and energy efficiency will and does pay dividends in the near-term and may be a competitive tool in the long-term.

Be energy smart
All energy management projects begin with being energy smart which calls for the understanding of energy usage. Use of Smart Meters that give real time readings of energy usage, can dramatically help businesses understand the benefit which energy management brings to the organisation.

Smart meters also cut the amount of time businesses spend on administration by allowing them to pay accurate bills, based on accurate readings. Some suppliers also support businesses to identify areas of energy wastage/inefficiency and help setting targets for energy reduction that guide behavioural change with regard to energy in the organisation.

Use of technologies that record the energy usage at the water or electricity meters putting data into a system where the users can graph it has made it easy to compare energy consumption in various departments, sites or buildings. Appropriate measures can then be implemented to improve the efficiency.

Partnerships between businesses and energy suppliers
Since the long-term benefits of reduced energy consumption is beneficial to both suppliers and consumers; the responsibility of managing energy consumption is being taken by both. Businesses should work with the suppliers on cost reduction strategies through identifying areas where energy is being wasted and advising businesses on how to save energy. Of key importance when choosing an energy supplier therefore is their depth of understanding of a business’ energy management needs.

Capitalise on government incentives
Businesses should always explore varied financing mechanisms for their energy efficiency programs e.g. government schemes generating electricity and selling it to the grid.

Key Steps to Complying with ESOS

Energy Savings Opportunity Scheme has already been launched. In fact, it is by now in its initial phase. However, many businesses are still not aware of the new scheme, especially those who are covered by the qualifications for ESOS. To help them understand what they need to do in compliance to the energy efficiency strategy, here are key steps they can follow along the way.

Measure Overall Energy Consumption

The first step to complying with ESOS is to make an initial estimate of the business? energy consumption. This includes measuring the use of electricity, renewable energy, combustible fuels and all other forms of energy consumed whether in buildings, transports and industrial processes.

Three important factors to consider are the measurement units used, the reference period and quality of data. Energy units, such as MWh and GJ, or energy expenditure costs should be applied. Business enterprises should also do the initial measurement within a reference period of 12 months. Moreover, data collected should be verifiable at hand.

Identify Areas of Significant Energy Consumption

When the total energy consumption for all the activities and assets has already been estimated, it’s then time to identify what areas in the organisation comprise the significant portion of the overall energy usage. The areas recognised should cover at least 90% of the overall consumption. Meaning to say, ESOS participants have the chance to omit 10% of the energy consumption and instead focus on the 90%. This would ensure that subsequent energy audits will be cost-effective and proportionate.

Consider and Choose Compliance Routes

In order to comply with ESOS, qualified businesses should consider what compliance routes to take. These routes include taking series of energy audits, operating and implementing a certified ISO 50001 energy management system, acquiring Display Energy Certificates (DECs) and working with Green Deal assessments. Whichever route the business takes, one should maintain credible evidences, along with helpful documents, to certify their compliance.

Report the Compliance

Except when the large enterprise covers all the significant areas of energy consumption by means of ISO 50001 certification, one should appoint a lead assessor to supervise, conduct and review the organisation’s chosen ESOS compliance route. In this case, the approved assessments should then be signed off at board level to ensure that the conclusions and recommendations for energy savings are properly carried. To confirm their compliance, the business should submit a formal notification to the Environment Agency.

Because ESOS is not just an opportunity but also an obligation, it designated compliance bodies and gave them the authority to file civil penalties towards those who fail to comply with the scheme. Not only that, these appropriate authorities have the right to publish information about non-compliant enterprises including their name, details of non-compliance and corresponding penalty amount. Among these UK compliance bodies are Natural Resources Wales, Environment Agency in England, The Scottish Environment Protection Agency (SEPA) and Northern Ireland Environment Agency.

So, if you are covered with the ESOS qualifications, make sure to be informed. As the famous saying goes, ?Ignorance of the law excuses no one.? Likewise, awareness of ESOS is a responsibility every large business in UK should give importance to.

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What Sub-Metering did for Nissan in Tennessee

When Nissan built its motor manufacturing plant in Smyrna 30 years ago, the 5.9 million square-foot factory employing over 8,000 people was state of art. After the 2005 hurricane season sky-rocketed energy prices, the energy team looked beyond efficient lighting at the more important aspect of utility usage in the plant itself. Let’s examine how they went about sub-metering and what it gained for them.

The Nissan energy team faced three challenges as they began their study. They had a rudimentary high-level data collection system (NEMAC) that was so primitive they had to transfer the data to spread-sheets to analyse it. To compound this, the engineering staff were focused on the priority of getting cars faster through the line. Finally, they faced the daunting task of making modifications to reticulation systems without affecting manufacturing throughput. But where to start?

The energy team chose the route of collaboration with assembly and maintenance people as they began the initial phase of tracking down existing meters and detecting gaps. They installed most additional equipment during normal service outages. Exceptions were treated as minor jobs to be done when convenient. Their next step was to connect the additional meters to their ageing NEMAC, and learn how to use it properly for the first time.

Although this was a cranky solution, it had the advantage of not calling for additional funding which would have caused delays. However operations personnel were concerned that energy-saving shutdowns between shifts and over weekends could cause false starts. ?We’ve already squeezed the lemon dry,? they seemed to say. ?What makes you think there?s more to come??

The energy team had a lucky break when they stumbled into an opportunity to prove their point early into implementation. They spotted a four-hourly power consumption spike they knew was worth examining. They traced this to an air dryer that was set to cyclical operation because it lacked a dew-point sensor. The company recovered the $1,500 this cost to fix, in an amazing 6 weeks.

Suitably encouraged and now supported by the operating and maintenance departments, the Smyrna energy team expanded their project to empower operating staff to adjust production schedules to optimise energy use, and maintenance staff to detect machines that were running without output value. The ongoing savings are significant and levels of shop floor staff motivation are higher.

Let’s leave the final word to the energy team facilitator who says, ?The only disadvantage of sub-metering is that now we can’t imagine doing without it.?

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